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6 July, 08:02

The angle 01 is located in Quadrant II, and sin (01) =

9/41

What is the value of cos (01) ?

Express your answer exactly.

cos (01) =

+2
Answers (1)
  1. 6 July, 09:03
    0
    -40/41

    Step-by-step explanation:

    Since we know 'cos' involves the Adjacent and Hypoteneus sides, we will need to solve for the 'Adjacent' side of the triangle using the Hypoteneus Theorem.

    41² = 9² + a²

    a = 40.

    However, this is in quadrant II, so when finding the 'cos' value, this side is - 40.

    Cosine is A/H, giving is:

    cos (01) = - 40/41
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