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sin (90- teta) is equal to​

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Quadratic Curve -- from Wolfram MathWorld

Prove that : (i) `sinthetacos(90^(@)-theta)+sin(90^(@)-theta

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Write the value of sintheta cos(90^(@)-theta)+costheta sin(90^(@)-the

cosec(90-theta)sin (90-theta) किसके बराबर है ?