Trigonometric Ratios

Section 8.5/8.6

Trigonometric Ratios

BA

C

29.2°

6.0 cm 12.3 cm

10.8 cm

Trigonometric Ratios

adjacent hypotenuse = 0.9

oppositehypotenuse = 0.5

oppositeadjacent = 0.6

adjacent

opposite

hypotenuse

BA

C

29.2°

Trigonometric Ratios

cos Angle(CAB))( = 0.9

sinAngle(CAB))( = 0.5

tan Angle(CAB))( = 0.6adjacent

hypotenuse = 0.9

oppositehypotenuse = 0.5

oppositeadjacent = 0.6

sin A

cos A

tan A

Find the 3 trigonometric ratios of angle A

Find the 3 trigonometric ratios of angle A

10

8sin A

6

8tan A

10

6cos A

Using Trig ratios

• To find d, set up the formula:

Sin 25 = 7/d

d = 7/sin 25

d = 16.6

Find unknowns

Find unknowns

T = 7.3U = 3.4