Presentation is loading. Please wait.

Presentation is loading. Please wait.

SinΘ--Cos Θ--Tan Θ.

Similar presentations


Presentation on theme: "SinΘ--Cos Θ--Tan Θ."— Presentation transcript:

1 SinΘ--Cos Θ--Tan Θ

2 The Trigonometric Functions we will be looking at
SINE COSINE TANGENT

3 The Trigonometric Functions
SINE COSINE TANGENT

4 SINE Prounounced “sign”

5 Prounounced “co-sign”
COSINE Prounounced “co-sign”

6 Prounounced “tan-gent”

7 Represents an unknown angle
Greek Letter q Prounounced “theta” Represents an unknown angle

8 hypotenuse hypotenuse opposite opposite adjacent adjacent

9 We need a way to remember all of these ratios…

10 Old Hippies Are High On Old Hippie Acid

11 Sin SOHCAHTOA Opp Hyp Cos Adj Hyp Tan Opp Adj Old Hippie

12 Finding sin, cos, and tan

13 SOHCAHTOA 10 8 6

14 10.8 9 A 6 Find the sine, the cosine, and the tangent of angle A.
Give a fraction and decimal answer (round to 4 places). 10.8 9 A 6

15 ? 5 4 3 Pythagorean Theorem: (3)² + (4)² = c² 5 = c
Find the values of the three trigonometric functions of . ? Pythagorean Theorem: 5 4 (3)² + (4)² = c² 5 = c 3

16 24.5 8.2 23.1 Find the sine, the cosine, and the tangent of angle A
Give a fraction and decimal answer (round to 4 decimal places). B 24.5 8.2 A 23.1

17 Finding a side

18 Ex. A surveyor is standing 50 feet from the base of a large tree. The surveyor measures the angle of elevation to the top of the tree as 71.5°. How tall is the tree? tan 71.5° ? tan 71.5° 71.5° y = 50 (tan 71.5°) 50 y = 50 ( )

19 Ex. 5 A person is 200 yards from a river. Rather than walk directly to the river, the person walks along a straight path to the river’s edge at a 60° angle. How far must the person walk to reach the river’s edge? cos 60° x (cos 60°) = 200 200 60° x x X = 400 yards


Download ppt "SinΘ--Cos Θ--Tan Θ."

Similar presentations


Ads by Google