The trig function that is defined as opposite over hypotenuse.
SOH CAH TOA
SINE
What is the side opposite the right angle of a right triangle?
Hypotenuse
What is the formula needed when a side length is missing from a right triangle?
Pythagorean Theorem
When do you use inverse trigonometric ratios?
When you don't know an angle in a right triangle (other than the right angle).
Which trig function does not use the hypotenuse in its ratio?
TANGENT (TOA)
What is the mnemonic device (or trick) used to remember all 3 trig ratios?
SOH CAH TOA
What is the only type of triangle you can use trig ratios with?
A right triangle
What is the value of x? Round to the nearest hundredth.

13.03
What is the inverse of SIN, COS, and TAN?
SIN-1
COS-1
TAN-1
Which trig function is the ratio of the adjacent side to the hypotenuse?
CAH - COSINE
Which trig function is defined as adjacent over hypotenuse?
What is COSINE?
What angle is opposite the hypotenuse?
The right angle
What is the value of x? Round to the nearest hundredth.

7.21
What inverse trigonometric ratios would be needed to find the measurement of angle X?

COS-1(3/9)
What is the number of trig functions times the number of inverse trig functions, plus the number of sides on a triangle?
12
This trig function can be used when you do not have the hypotenuse but you have the other two sides.
TANGENT
Which trig function would you use if given the opposite side of an angle and an adjacent side?
TOA Tangent (TAN)
Do the following measurements create an acute, obtuse, or right triangle?
3, 4, 5
Right Triangle
What is the measure of angle B? Round your answer to the nearest hundredth.

TAN-1(9/12) = 36.87o
Say the mnemonic device for remembering the trig functions 3 times while waving your hands.
Teacher's Discretion
Which trig function is defined as opposite over adjacent.
TANGENT
Which trig function would you use if given an adjacent side to an angle and the hypotenuse?
CAH Cosine (COS)
Find the value of x. Round to the nearest hundredth.

22.25
What is the measure of angle A? Round your answer to the nearest hundredth.

TAN-1(12/9)=53.13o
6, 8, 12
Obtuse
144 > 100