whi8trebeCharyx whi8trebeCharyx

21-10-2016
Mathematics

contestada

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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nobillionaireNobley nobillionaireNobley

31-10-2016

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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