Given that sinθ = a/b , then cosθ is equal to
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value of cos theta in parameters of a and b....
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sin theta = a/b
sin^2theta + cos ^2theta =1
cos^2theta= 1-a^2/b^2
=b-a/b
sin^2theta + cos ^2theta =1
cos^2theta= 1-a^2/b^2
=b-a/b
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