Найти значение выражения, если x=П/6 8(sin^2 x - cos^2 x)
8( 1 - cos^2x - cos^2x) = 8( 1 - 2cos^2x) = 8 - 16 cos^2x = 8 - 16*(√3/2)^2 = 8- 16*3/4= -4
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8( 1 - cos^2x - cos^2x) = 8( 1 - 2cos^2x) = 8 - 16 cos^2x = 8 - 16*(√3/2)^2 = 8- 16*3/4= -4
8( 1 - cos^2x - cos^2x) = 8( 1 - 2cos^2x) = 8 - 16 cos^2x = 8 - 16*(√3/2)^2 = 8- 16*3/4= -4