If cos(x + 40)o = 0.0872, what is the value of x?

A.

85o

B.

75o

C.

65o

D.

45o

View answer & explanation

Correct answer is D

cos(x + 40)o = 0.0872

x + 40 = cos-10.0872

x + 40o = 84.99o

x = 84.99o - 40o

x = 44.99

x = 45o

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