solve this problem cos(theta-1170)
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Answer :
Now, cos (θ - 1170)
= cos {- (1170 - θ)}
= cos (1170 - θ), since cos (- θ) = cosθ
= cos {(360 × 3) + (90 - θ)}
= cos (90 - θ), since cos (360n - θ) = cosθ, where n is any Natural number
= sinθ, since cos (90 - θ) = sinθ
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Now, cos (θ - 1170)
= cos {- (1170 - θ)}
= cos (1170 - θ), since cos (- θ) = cosθ
= cos {(360 × 3) + (90 - θ)}
= cos (90 - θ), since cos (360n - θ) = cosθ, where n is any Natural number
= sinθ, since cos (90 - θ) = sinθ
#MarkAsBrainliest
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