Question

Помогите пожалуйста 20 баллов​

Answer 1

$1.\\\sqrt{cos^2(x)(1-tg(x)) + sin^2(x)(1-ctg(x))} = \sqrt{cos^2(x) - sin(x)cos(x) + sin^2(x)-sin(x)cos(x)}$$=\sqrt{1 - sin(2x)} = |sin(x) - cos(x)| = cos(x) - sin(x)$

$2.\\\sqrt{4-4sin^2(x)} - \sqrt{4cos^2(x) + 4cos(x) + 1} = 2|cos(x)|-|2cos(x)+1| = -2cos(x) - (-(2cos(x)+1)) = -2cos(x)+2cos(x) - 1 = -1$