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Mathematics 15 Online
OpenStudy (vayacondios1):

In ΔPQR, ∠P and ∠Q are complimentary angles. if sin Q=4/5, cos P and cos Q=_________?

rishavraj (rishavraj):

\[\sin ^2 Q + \cos ^2 Q = 1\]

OpenStudy (mertsj):

co-functions of complementary angles are equal.

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