1.sin(2x+π/3)=根号2/2

问题描述:

1.sin(2x+π/3)=根号2/2
2.COS(3X+π/4)=根号3/2

①∵sin(2x+π/3)=根号2/2
∴2x+π/3=π/4+2kπ(k∈Z)或2x+π/3=5π/4+2kπ(k∈Z)
∴x=-π/24+kπ 或x=11π/24+kπ
②∵cos(3x+π/4)=根号3/2
∴3x+π/4=π/6+2kπ ∴x=-π/36+2kπ/3