Вычислите: tg 30° *ctg 150° - sin 270° + sin(-30°). Created by Азяка21. algebra-ru

Вычислите: tg 30° *ctg 150° - sin 270° + sin(-30°)...

Азяка21 @Азяка21

July 2022 1 16 Report

Вычислите:
tg 30° *ctg 150° - sin 270° + sin(-30°)

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Universalka

Verified answer

Tg30° * ctg150° - Sin270° + Sin( - 30°) = 1/√3 * Ctg(180° - 30°) - (- 1) - 1/2 =
= 1/√3 * ( - Ctg30°) + 1 - 1/2 = 1/√3 * (- √3) + 1/2 = - 1 + 0,5 = - 0,5

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