RIGHT TRIANGLE TRIGONOMETRY GO FOR A RIDE HOW

RIGHT TRIANGLE TRIGONOMETRY GO FOR A RIDE HOW FAR CAN YOU SEE?

Trigonometric (trig) Ratios

The Trig Functions we will be looking at SINE COSINE TANGENT

SINE COSINE TANGENT

Greek Letter Prounounced “theta” Represents an unknown angle

Opposite side The side across the triangle from the angle in question opposite Adjacent side The side next to the angle in question adjacent

hypotenuse opposite

hypotenuse adjacent opposite

hypotenuse adjacent opposite

There’s the famous Indian Chief, Chief SOH CAH TOA Sin = Opp/Hyp Cos = Adj/Hyp Tan = Opp/Adj

Finding sin, cos, and tan of an angle. Just writing a ratio

Find the sine, the cosine, and the tangent of angle A. 10. 8 9 A 6 Shrink yourself down and stand where the angle is. Now, figure out your ratios.

Find the sine, the cosine, and the tangent of angle A A 24. 5 8. 2 23. 1 Shrink yourself down and stand where the angle is. Now, figure out your ratios.

Ex. 1: Find . Round to one decimal place. nd 2 17. 2 tan 17. 2 9 9 Shrink yourself down and stand where the angle is. Now, figure out which trig ratio you have and set up the problem. Make sure you are in degree mode (not radians). )

Ex. 2: Find . Round to one decimal place. 7 23 nd 2 cos 7 23 Make sure you are in degree mode (not radians). )

Ex. 3: Find . Round to one decimal place. 200 0 0 4 nd 2 sin 200 400 ) Make sure you are in degree mode (not radians).