C-09-Q145mediumsingle_mcq
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ব্যাখ্যা
This applies the complementary-angle (cofunction) identity: the cotangent of an angle's complement equals the tangent of the angle, since . Cofunctions of complementary angles are equal.
This applies the complementary-angle (cofunction) identity: the cotangent of an angle's complement equals the tangent of the angle, since . Cofunctions of complementary angles are equal.