1. Trigonometry FUNCTION Reciprocal Function LESSON 2/6
Objective: Students will be able to find trigonometric ratios of acute angles.
Standards: 2.04 Use trigonometric ratios to solve problems
Essential Question: What is your mnemonic device to remember trig ratios?
LESSON
FUNCTION
Reciprocal Function

2. To solve trig functions in the calculator,
Objective: Students will be able to find trigonometric ratios of acute angles.
Standards: 2.04 Use trigonometric ratios to solve problems
Essential Question: What is your mnemonic device to remember trig ratios?
is the Greek letter Theta. It is
often used in place of “x” when
naming angles.
To solve trig functions in the calculator,
make sure to set your MODE to DEGREES
Directions:
Press MODE, arrow down to Radian
Arrow over to Degrees
Press ENTER

3. Objective: Students will be able to find trigonometric ratios of acute angles.
Standards: 2.04 Use trigonometric ratios to solve problems
Essential Question: What is your mnemonic device to remember trig ratios?

4. Objective: Students will be able to find trigonometric ratios of acute angles.
Standards: 2.04 Use trigonometric ratios to solve problems
Essential Question: What is your mnemonic device to remember trig ratios?

5. Objective: Students will be able to find trigonometric ratios of acute angles.
Standards: 2.04 Use trigonometric ratios to solve problems
Essential Question: What is your mnemonic device to remember trig ratios?
Ex3. A 15 foot ladder rests against a tree on level ground and forms a 75⁰ angle of elevation. What is the height of the tree? What is the distance of the base of the tree to the base of the ladder?

6. Objective: Students will be able to find trigonometric ratios of acute angles.
Standards: 2.04 Use trigonometric ratios to solve problems
Essential Question: What is your mnemonic device to remember trig ratios?
Ex4. A ship is on the surface of the water, and its radar detects a submarine at a distance of 238 feet, at an angle depression of 23⁰. How deep is the submarine?

7. Objective: Students will be able to find trigonometric ratios of acute angles.
Standards: 2.04 Use trigonometric ratios to solve problems
Essential Question: What is your mnemonic device to remember trig ratios?
Ex 5. y⁰

8. Objective: Students will be able to find trigonometric ratios of acute angles.
Standards: 2.04 Use trigonometric ratios to solve problems
Essential Question: What is your mnemonic device to remember trig ratios? 6