If sec 2A = 1/sin 13A, determine the angle A in degrees.

a. 5°

b. 6°

c. 3°

d. 7°

Question

Mathematics

Landin

25 August, 10:35

If sec 2A = 1/sin 13A, determine the angle A in degrees.

a. 5°

b. 6°

c. 3°

d. 7°

+5

Answers (1)

Know the Answer?

Tyrone Blevins · Answer 1

Sec 2 A = 1 / cos 2 A

1 / cos 2 A = 1 / sin 13 A

cos 2 A = sin 13 A

2 A = 90° - 13 A

2 A + 13 A = 90°

15 A = 90°

A = 90° : 15

Answer:

B) A = 6°

If sec 2A = 1/sin 13A, determine the angle A in degrees.a. 5°b. 6°c. 3°d. 7°

If sec 2A = 1/sin 13A, determine the angle A in degrees.

a. 5°

b. 6°

c. 3°

d. 7°