Lesson 5-1: Angles and Degree Measure

Slides:



Advertisements
Similar presentations
Angles of Rotation and Radian Measure In the last section, we looked at angles that were acute. In this section, we will look at angles of rotation whose.
Advertisements

Warm Up Find the measure of the supplement for each given angle °2. 120° °4. 95° 30°60° 45° 85°
5.1 Angles and Degree Measures. Definitions An angle is formed by rotating one of two rays that share a fixed endpoint know as the vertex. The initial.
Objectives: Be able to draw an angle in standard position and find the positive and negative rotations. Be able to convert degrees into radians and radians.
Objectives: 1.Be able to draw an angle in standard position and find the positive and negative rotations. 2.Be able to convert degrees into radians and.
Angles and Arcs in the Unit Circle Radian and Degree Measure In this section, we will study the following topics: Terminology used to describe.
Lesson 5-1: Angles and Degree Measure
Unit 4: Intro to Trigonometry. Trigonometry The study of triangles and the relationships between their sides and angles.
Angles and Radian Measure Section 4.1. Objectives Estimate the radian measure of an angle shown in a picture. Find a point on the unit circle given one.
Section 4.1 Angles and Radian Measure. The Vocabulary of Angles An angle is formed by two rays that have a common endpoint. One ray is called the initial.
Angles and Their Measure Section Angles Vertex Initial Side Terminal Side.
4.1 Radian and Degree Measure. Objective To use degree and radian measure.
Radian and Degree Measure Objectives: Describe Angles Use Radian and Degree measures.
4-1.  Thinking about angles differently:  Rotating a ray to create an angle  Initial side - where we start  Terminal side - where we stop.
5.1 Angles and Degree Measure. Angle- formed by rotating a ray about its endpoint (vertex) Initial Side Starting position Terminal SideEnding position.
Unit 1, Lesson 1 Angles and their Measures. What is an angle? Two rays with the same Endpoint.
Advanced Algebra II Advanced Algebra II Notes 10.2 continued Angles and Their Measure.
A3 5.1a & b Starting the Unit Circle! a)HW: p EOO b)HW: p EOE.
Trigonometric Functions
Angles.
Trigonometry Day 1 ( Covers Topics in 4.1) 5 Notecards
Trigonometry The science of studying angle measure.
Introduction to Trigonometry Angles and Radians (MA3A2): Define an understand angles measured in degrees and radians.
Concept. Example 1 Draw an Angle in Standard Position A. Draw an angle with a measure of 210° in standard position. 210° = 180° + 30° Draw the terminal.
Introduction to the Unit Circle Angles on the circle.
Objectives Change from radian to degree measure, and vice versa Find angles that are co-terminal with a given angle Find the reference angle for a given.
13.2 Angles of Rotation and Radian Measure
Radians and Degrees. What the heck is a radian? The radian is a unit of angular measure defined such that an angle of one radian subtended from the center.
Warm-Up 3/26 Fahrenheit. Rigor: You will learn how to convert from degrees to radians and radians to degrees. Relevance: You will be able to solve real.
3.1 Angles in the Coordinate Plane. Positive We can measure angles in degrees Negative   initial side terminal side 360   once around.
How do we draw angles in standard position?
More Trig – Angles of Rotation Learning Objective: To find coterminal and reference angles and the trig function values of angles in standard position.
Parts of an Angle (the fixed side) (the rotating side) alpha – common angle name Each angle above is said to be in the “standard position” – the vertex.
Math Analysis Chapter Trig
An angle is formed by rotating an initial arm about a fixed point. Angles in Standard Position - Definitions An angle is said to be in standard position.
Radian Measure That was easy
Radians and Angles. Angle-formed by rotating a ray about its endpoint (vertex) Initial Side Starting position Terminal Side Ending position Standard Position.
LESSON 6-1: ANGLES & THE UNIT CIRCLE BASIC GRAPHING OBJECTIVE: CONVERT BETWEEN DEGREE AND RADIAN MEASURE, PLACE ANGLES IN STANDARD POSITION & IDENTIFY.
Unit 7: Angles and Angle Measures
Aim: How do we look at angles as rotation? Do Now: Draw the following angles: a) 60  b) 150  c) 225  HW: p.361 # 4,6,12,14,16,18,20,22,24,33.
Ch 14 Trigonometry!!. Ch 14 Trigonometry!! 14.1 The unit circle Circumference Arc length Central angle In Geometry, our definition of an angle was the.
Vocabulary Origin & Quadrants Vertex Right, Acute, & Obtuse Complementary & Supplementary Central & Inscribed Angles Arc.
Angles and their Measures Essential question – What is the vocabulary we will need for trigonometry?
 Think back to geometry and write down everything you remember about angles.
Holt McDougal Algebra Angles of Rotation Warm Up Find the measure of the supplement for each given angle. Think back to Geometry… °2. 120°
Agenda Notes : (no handout, no calculator) –Reference Angles –Unit Circle –Coterminal Angles Go over test Go over homework Homework.
Section 4.1. Radian and Degree Measure The angles in Quadrant I are between 0 and 90 degrees. The angles in Quadrant II are between 90 and 180 degrees.
5-1 Angles and Degree Measure. Give the angle measure represented by each rotation. a)5.5 rotations clockwise b)3.3 rotations counterclockwise.
Introduction to Trigonometry Angles and Radians (MA3A2): Define an understand angles measured in degrees and radians.
4.2 Degrees and Radians Objectives: Convert degree measures of angles to radian measures Use angle measures to solve real-world problems.
Trigonometry Section 7.1 Find measures of angles and coterminal angle in degrees and radians Trigonometry means “triangle measurement”. There are two types.
Lesson 5-1 Angles and Degree Measure Objective: To convert decimal degrees to measure degrees. To find the number of degrees in a given number of rotations.
Section 4.1.  A ray is a part of a line that has only one endpoint and extends forever in the opposite direction.  An angle is formed by two rays that.
13-2 ANGLES AND THE UNIT CIRCLE FIND ANGLES IN STANDARD POSITION BY USING COORDINATES OF POINTS ON THE UNIT CIRCLE.
Chapter 7: Trigonometric Functions Section 7.1: Measurement of Angles.
Measurement of Rotation
Radian and Degree Measure
Quadrants: Quarters on a coordinate plane
5.2 Understanding Angles terminal arm q initial arm standard position
5.1 Angles and Degree Measure
Chapter 1 Trigonometric Functions.
10-2 Angles of Rotation Warm Up Lesson Presentation Lesson Quiz
Radian Measure and Coterminal Angles
17-1 Angles of Rotation and Radian Measure
Lesson _______ Section 4
Students, Take out your calendar and your homework. Take out your spiral notebook and Complete the DNA. Use your notes if necessary. Simplify.
Lesson 5-1: Angles and Degree Measure
Radian and Degree Measure
Angles and Radian Measure
Do Now Classify the following angles as obtuse, right, straight, or acute
Presentation transcript:

Lesson 5-1: Angles and Degree Measure LEQ - What are co-terminal angles and reference angles? Lesson 5-1: Angles and Degree Measure

Angles – two rays joined at a vertex Angles – two rays joined at a vertex. Angle are measured in degrees, minutes and seconds. Standard Position – all angles in the coordinate plane have their initial side on the x-axis.

Give the angle measurements for each of the following: Positive angles are measured counter-clockwise Negative angle are measured clockwise Give the angle measurements for each of the following: 3 clockwise rotations 2.4 counterclockwise rotations

Reference Angle – positive, acute angle formed between terminal side and x-axis. In your notes, sketch each angle and indicate the reference angle measure: a.) 150º b.) -315º c.) 225º

Quadrantal Angles – angles whose terminal side lies on the axes.

Coterminal angles – angles which differ by 360º and have the same terminal side. If αis the degree measure of an angle, then all angles meas°, where k is an integer, are coterminal with α. Ex. Identify all angles coterminal with 45°

Coterminal angles – angles which differ by 360º and have the same terminal side. If 775º is in standard position, Determine a coterminal angle that is between 0 and 360º. State the quadrant in which the terminal side lies. If -777º is in standard position, Determine a coterminal angle that is between 0 and 360º. State the quadrant in which the terminal side lies.

latitude and longitude lines on earth Angle conversion Angles are measures in degrees, minutes and second. A minute is 1/60 of a degree and a second is 1/60 of a minute. (ex. 32º 5' 2.34" ) latitude and longitude lines on earth

Angle conversion Angles are measures in degrees, minutes and second Angle conversion Angles are measures in degrees, minutes and second. A minute is 1/60 of a degree and a second is 1/60 of a minute. (ex. 32º 5' 2.34" ) Example: Convert 329.125° to degrees, minutes and seconds. 329° + (0.125  60) 329° + 7’ + (0.5  60) 329° + 7’ + 30” Example: Convert 15.735° to degrees, minutes and seconds.

Angle conversion Angles are measures in degrees, minutes and second Angle conversion Angles are measures in degrees, minutes and second. A minute is 1/60 of a degree and a second is 1/60 of a minute. (ex. 32º 5' 2.34" ) Example: Convert 39°.5’34” to a decimal, (just degrees).

What is the high school’s latitude and longitude? Convert latitude and longitude to just degrees.

Angle Conversion: Convert 52.125º to degrees, minutes and seconds.

Graphing calculator: Convert 52.125º to degrees, minutes and seconds.

LESSON VOCABULARY REVIEW Vertex Initial side Terminal side Degrees Minutes Seconds Quadrantial Angle Co-terminal Angle