Defining and Understanding Trigonometric Ratios

Using the Table on page 426, what angel has Cosine of .7771?

• 58 Degrees

• 32 Degrees

• 39 Degrees

• 51 Degrees

What is the value of cos 90º?

• 0

• 1

• undefined

Match the trig function to the correct ratio:

• 4/3

• tan C

• 3/4

• tan A

• 4/5

• cos A

• 3/5

• sin A

Match the trigonometric expression to the correct ratio using the diagram.

• tan(P)

• q/p

• sin(P)

• p/r

• tan(Q)

• q/r

• cos(P)

• p/q

In a right triangle, while 10 degree angle's ​ (a)   ratio is 0.985 , 80 degree angle's ​ (b)   ratio is ​ 0.985. Because they are ​ (c)   angles. The one angle's adjacent leg is another one's ​ (d)  

• Adjacent Leg/ Hypotenuse

• Opposite Leg/Hypotenuse

• complementary

• opposite leg

• Tan X

• Cos X

• Sin X

• Squirrel

Match each to it's correct ratio.

• 15/8

• Cos Q

• 15/17

• None of these

• 8/17

• Sin Q

• 8/15

• Tan Q

cos(x) is fo​und by the ratio ​ (a)   over ​ (b)  

• 6

• 10

• 8

Match the following function to their corresponding trig ratio.