If the sin 60=√3/2, then which statement is true?

A. cos 30=√3/2, bc the cos and sin are complements

B. cos 120 = √3/2 bc the cos and sin are supplements

C. cos 30=0 bc the cos and sin are complements

D. cos 120 = 0 bc the cos and sin are supplements

Question

6 August, 09:20

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Answers (1)

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Isabelle Aguirre · Answer 1

Cos30 = sin (90 - 60) = √3/2, because cos and sin are complements

cos120 = cos (180 - 60) = - cos60 = - 1/2

If the sin 60=√3/2, then which statement is true?A. cos 30=√3/2, bc the cos and sin are complementsB. cos 120 = √3/2 bc the cos and sin are supplementsC. cos 30=0 bc the cos and sin are complementsD. cos 120 = 0 bc the cos and sin are supplements