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• What is the difference between sin(90) = 0.893996664 and sin(90) = 1? - Quora

What is the difference between sin(90) = 0.893996664 and sin(90) = 1? - Quora

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trigonometry - Why does sin(90)=1, and not 0? - Mathematics Stack

What is the difference between sin(90) = 0.893996664 and sin(90

Why sin 90 is 1? When the reference angle becomes 90 and the

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What is the value of sin90? - Quora

How to solve sin (180°+α) sin (90°-α)? How does sin change to