Question

3sin patrat x-2sin x cos x - cos patrat x = 0 ( ajutatima va rog mult) urgent sunt la teza

Answer 1

3 sin patrat x - 2 sin x 1/sin x- cos patrat x=0
3 sin patrat x-2 - cos patrat x=0
3 sin patrat x - cos patrat x=2
3 sin patrat x + 3 cos patrat x- 4 cos patrat x=2
3(sin patrat x+ cos patrat X) - 4 cos patrat x=2
3- 4 cos patrat x=2
- 4cos patrat x=-1
cos patrat x= 1/4
cos x=1/2
x= 60 de grade