Mark M. answered • 10/21/16
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cos (90° - x°) = sin x° Identity
sin x° = 5/13, cos (90° - x°°) = ?
Anna L.
asked • 10/21/16What is cos(90°-x°)?
In a right triangle, one angle measures x°, where sin x°=5/13. What is cos(90°-x°)?
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