Mark M. answered • 03/07/23
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The sine and cosine are complementary (as the heading states!).
x + 9 + 4x + 1 = 90°
Anthony D.
asked • 03/07/23sine/cosine of complementary angles
In a right triangle, sin (x+9)∘ = cos (4x+1)∘ Find the smaller of the triangle’s two acute angles.
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