Question

Аяжан Қаниял......... ​

Answer 1

Объяснение:

18.1.

$1)\ \\arcsin2x=\frac{\pi }{3} \\2x=\frac{\sqrt{3} }{2}\ |:2\\ x=\frac{\sqrt{3} }{4}. \\2)\\arcsin3x=\frac{\pi }{4}\\ 3x=\frac{\sqrt{2} }{2}\ |:3\\ x=\frac{\sqrt{2} }{6}.\\ 3)\ \\arcsin2x=1\\2x\approx0,84\ |:2\\x\approx0,42.\\4)\\arcsin2x=0\\2x=0\ |:2\\x=0.$

18.2.

$1)\\arccos2x=\frac{\pi }{6}\\ 2x=\frac{\sqrt{3} }{2}\ |:2\\x=\frac{\sqrt{3} }{4}\\ 2)\\arccos3x=\frac{\pi }{3}\\ 3x=\frac{1}{2} \ |:3\\x=\frac{1}{6}.\\ 3)\\arccos4x=\frac{\pi }{2} \\4x=0\ |:4\\x=0.\\4)\\arccos2x=0\\2x=1\ |:2\\x=\frac{1}{2} .$