1. What basic trigonometric identity would you use to verify that cot x sin x = cos x? ...

a. cos^2x+sin^2x=1.

b. cot x = cosx/sinx.

c. cos x = 1/sec x.

d. sin x = 1/csc x ...

2. What basic trigonometric identity would you use to verify that sin^2x+cos^2x/cosx = sec x?.

a. sin x=1/csc x.

b. 1+cot^2x=csc^2x.

c. cos^2x+sin^2x=1.

d. cos x = 1/sec x

Question

Joselyn Ward

Mathematics

29 July, 19:24

1. What basic trigonometric identity would you use to verify that cot x sin x = cos x? ...

a. cos^2x+sin^2x=1.

b. cot x = cosx/sinx.

c. cos x = 1/sec x.

d. sin x = 1/csc x ...

2. What basic trigonometric identity would you use to verify that sin^2x+cos^2x/cosx = sec x?.

a. sin x=1/csc x.

b. 1+cot^2x=csc^2x.

c. cos^2x+sin^2x=1.

d. cos x = 1/sec x

+4

Answers (1)

Know the Answer?

Jacqueline Liu · Answer 1

1) cot x * sin x = cos x

(cos x / sin x) * sin x = cos x

cos x = cos x

Answer: B) cot x = cos x / sin x

2) (sin² x + cos² x) / cos x = sec x

1/cos x = sec x

sec x = sec x

Answer: C) cos² x + sin² x = 1