How do i write sin 77° in terms of cosine?

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How do i write sin 77° in terms of cosine?

Guest Mar 5, 2015

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Best Answer

+129849

+5

The sine and cosine are cofunctions

And sin Θ = cos (90 - Θ )

So

sin 77 = cos (90 - 77) = cos 13

CPhill Mar 5, 2015

1⁺⁰ Answers

+129849

+5

Best Answer

The sine and cosine are cofunctions

And sin Θ = cos (90 - Θ )

So

sin 77 = cos (90 - 77) = cos 13

CPhill Mar 5, 2015

1 Online Users