given that cos(x)=1/3 find sin(90-x)

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given that cos(x)=1/3 find sin(90-x)

Guest Jan 23, 2015

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Best Answer

+128577

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Since sine and cosine are co-functions, cos x = sin(90-x)

Therefore, cos x = 1/3

And using the cosine inverse, we have

cos^-1 (1/3) = about 70.53°

And the sin (90 - 70.53) = 1//3 !!!!

CPhill Jan 23, 2015

1⁺⁰ Answers

+128577

+5

Best Answer

Since sine and cosine are co-functions, cos x = sin(90-x)

Therefore, cos x = 1/3

And using the cosine inverse, we have

cos^-1 (1/3) = about 70.53°

And the sin (90 - 70.53) = 1//3 !!!!

CPhill Jan 23, 2015

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