Introduction to Right Triangle Trigonometry

In what kind of triangle can you use SOH-CAH-TOA?

• right triangle

• any kind of triangle

• any kind of triangle except a right triangle

• none of the above

What angle satisfies the ratio of the adjacent side to the hypotenuse

• sine

• cosine

• tangent

• all of the above

• none of the above

What trigonometric function is the reciprocal of the sine function?

• cosine

• cosecant

• secant

• cotangent

cos B = ? Remember: Cosine ratio is adjacent/hypotenuse

• 12/13

• 12/5

• 5/13

• 5/12

Find the value of sin Z.

• 20/21

• 21/29

• 21/20

• 20/29

Set up the problem.

• sin(47) = x/28

• cos(47) = x/28

• tan(47) = x/28

• cos(47) = 28/x

1. Right triangle ABC is shown. 

Select all expressions which are equal to the length of side BC .

What is the cosine of angle P?

In triangle ABC, BC =3 cm, AB =5 cm ,then tan A is 

• 3/5

• 4/5

• 3/4

• 4/3