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How to find the value of sin(90+ theta) ?
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How to find the value of sin(90+ theta) ?

User Wsams
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7.9k points

1 Answer

3 votes
sin(90 + θ)

By addition angle formula for sine.

sin90cosθ + cos90sinθ

1*cosθ + 0*sinθ

cosθ + 0

= cosθ

sin(90 + θ) = cosθ
User Eugene Smoliy
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7.9k points
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