Trigonometry - Solving Trig Equations, Law of Cosines, Law of Sines, Trigonometry Identities

11.04

Find PQ

21.03

Find RQ

15

Find RS

63°

Find angle B

13.98

Find m∠E.

30.0

Find m∠E.

34

Find side b.

28

Find side c

36

Find side c.

63°

Find the measure of angle A.

59°

Find the measure of angle B.

75°

Find the measure of angle B.

38°

Find the measure of angle C.

42°

Find the measure of angle C.

14

Find the measure of side a.

16

Find the measure of side a.

13

Find the measure of side c.

19

Find the measure of side c.

x = 30, 150

Solve 2sinx - 1 = 0 where 0 ≤ x < 360

x = 90, 210, 330

Solve 2sin²x - sin x - 1 = 0 where 0 ≤ x < 360 (hint: factor)

x = no solution

Solve cos x = 5 where 0 ≤ x < 360

x= 30, 330

Solve cos x = √3/2 where 0 ≤ x < 360

x = 90, 270

Solve cosx=0 where 0 ≤ x < 360

x = 90,270,45,225

Solve cosxtanx-cosx=0 where 0 ≤ x < 360

x=0, 60, 180, 300, 360

Solve sinx(1 - 2cosx) = 0 where 0 ≤ x < 360 (hint: factor)

x = 0, 90, 180

Solve sin²x - sinx = 0 where 0≤ x <360 (Hint: factor)

sin 60

cos 30

tan 50

cot 40

sec 10

csc 80

cot² θ

csc² θ - 1

csc 24

sec 66

tan² θ

sec² θ - 1

1

sec² θ - tan² θ

cos 15

sin 75

cot 10

tan 80