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gazizaaaaaa
@gazizaaaaaa
July 2022
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3 пожалуйста помогите
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Cos63 cos 3 + cos87 cos 27 cos63 cos 3 +sin 3 sin 63 cos(63-3)
------------------------------------ = ------------------------------------- = ---------------- =1
cos132 cos72+cos42 cos 18 -sin42 sin18 +cos42 cos 18 cos(42+18)
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Verified answer
Cos63 cos 3 + cos87 cos 27 cos63 cos 3 +sin 3 sin 63 cos(63-3)------------------------------------ = ------------------------------------- = ---------------- =1
cos132 cos72+cos42 cos 18 -sin42 sin18 +cos42 cos 18 cos(42+18)