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Why Sin(90-θ) = Cosθ ?
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Why Sin(90-θ) = Cosθ ?
Why Cos(90-θ) = Sinθ ?
Why Tan(90-θ) = Cotθ ?
Why Cot(90-θ) = Tanθ ?
Why Cosec(90-θ) = Secθ ?
Why Sec(90-θ) = Cosecθ ?
Why Cos(90-θ) = Sinθ ?
Why Tan(90-θ) = Cotθ ?
Why Cot(90-θ) = Tanθ ?
Why Cosec(90-θ) = Secθ ?
Why Sec(90-θ) = Cosecθ ?
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