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Henry C
Lv 4
Henry C asked in Science & MathematicsMathematics · 1 decade ago

find the value of acute angle A is Sin A/Cos 50 = 1?

Sin A

---------- = 1

Cos 50

1 Answer

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  • UJ
    Lv 6
    1 decade ago
    Favorite Answer

    sinA = cos(90 - A)

    cos(90 - A) / cos50 = 1

    cos90cosA + sin90sinA = cos50

    sinA = cos50

    A = sin^-1(0.642787609)

    A = 40 degrees ---> final answer!

    Source(s): experience!
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