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Luna0499
@Luna0499
July 2021
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Помогите пожалуйста вычислить. -2sin^2 (pi/6-а(альфа)) +6 - 2cos^2(pi/6-a)
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kirichekov
Verified answer
-2sin²(π/6-α)+6-2cos²(π/6-α)=-2*[sin²(π/6-α)+cos²(π/6-α)]+6=-2*1+6=4
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Answers & Comments
Verified answer
-2sin²(π/6-α)+6-2cos²(π/6-α)=-2*[sin²(π/6-α)+cos²(π/6-α)]+6=-2*1+6=4