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15 July, 21:39

Find the value of the expression if sin beta = 0.45, find cos (pi/2-beta)

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  1. 15 July, 21:51
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    If sin β = 0.45, we have to find cos (π/2 - β).

    We know that: sin x = cos (90° - x), or sin x = cos (π/2 - x).

    For example: sin 60° = cos 30°.

    cos (π/2 - β) = sin β = 0.45

    Answer: 0.45
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