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7 May, 15:08

Which pair of angle measures satisfy the condition sin J = cos K? A. 15°, 40° B. 45°, 90° C. 60°, 30° D. 80°, 100° E. 70°, 110°

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  1. 7 May, 15:27
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    Sin J = cos K

    sin J = cos (90 - J)

    K = 90 - J

    sin 60 = cos (90 - 60) = cos 30

    Therefore, 60°, 30° satisfy the condition sin J = cos K.
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