sin 30 + cos 300 / 2 sin 15 cos 15. Created by Tanya123457825. algebra-ru

2 sin 15 cos 15...

March 2022 1 4 Report

sin 30 + cos 300 / 2 sin 15 cos 15

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mayli $\frac{sin30 ^{o } +cos300 ^{o} }{2sin15 ^{o} cos15 ^{o} } = \frac{ sin30 ^{o} +cos( \frac{3 \pi }{2}+30 ^{o} ) }{sin30 ^{o} } = \frac{sin30 ^{o}+sin30 ^{o} }{sin30 ^{o} } = \frac{2sin30 ^{o} }{sin30 ^{o} } =2$

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