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7 August, 08:51

In a right triangle, the value of cos B = 3/5. What is the value of sin B?

[Leave your answer as a fraction]

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Answers (1)
  1. 7 August, 11:41
    0
    4/5

    Step-by-step explanation:

    cos B = 3/5

    cos Ф = adjacent/hypothesis

    hypothesis ² = adjacent² + opposite²

    5² = 3² + o²

    25 = 9+o²

    25-9=o²

    16 = o²

    √16 = o = 4

    Sin B = opposite/hypothesis = 4/5
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