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gothchic
gothchic asked in Science & MathematicsMathematics · 1 decade ago

In right triangle ABC, find cos B.?

BC is 15

CA is 20

BA= hypotenuse

3 Answers

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  • DWRead
    Lv 7
    1 decade ago
    Favorite Answer

    BA = √(15²+20²)

    = √625

    = 25

    cosB = BC/BA

    = 15/25

    = 0.6

  • Q361
    1 decade ago

    cos B = 15/25

  • nozar nazari
    Lv 7
    1 decade ago

    tan B=20/15=1.3333333,B=53.13deg

    cos53.13=0.6

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