Intro to Trigonometry in Geometry

Which Trig Ratio uses opposite side over the hypotenuse?

What trig ratio does not use the hypotenuse?

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

• 12/13

• 12/5

• 5/13

• 5/12

Find the measure of the angle.  Round to the nearest tenth. 

• 30.8

• 32.1

• 34.3

• 36.9

Find the length of side w.

• 21.4 cm

• 18.0 cm

• 36.5 cm

• 43.6 cm

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

• cos(P)

• q/r

• tan(P)

• p/r

• sin(P)

• q/p

• tan(Q)

• p/q

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

• 6

• 10

• 8

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

Match each to it's correct ratio.

• 15/8

• Cos Q

• 15/17

• Sin Q

• 8/15

• Tan Q

• 8/17

• None of these

• Tan X

• Cos X

• Sin X

• Squirrel