6.
If A + B + C = 180°, show that
a)
cos A sin B sin C + cos B sin C sin A + cos C sin A...
Mathematics, 08.12.2020 17:20 von1144
6.
If A + B + C = 180°, show that
a)
cos A sin B sin C + cos B sin C sin A + cos C sin A sin B = 1 + cos A cos B cos C
Answers: 1
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