If `|s in x+cos x|=|s in x|+|cos x|(s in x ,cos x!=0)` , then in which quadrant foes `x` lie?
If `|s in x+cos x|=|s in x|+|cos x|(s in x ,cos x!=0)` , then in which quadrant foes `x` lie?
5 views
1 Answers
Here we have |sin x + cos x | = | sin x | + | cos x | .
It implies that sin x and cos x must have the same sign Therefore , x lies in the first or third quadrant .
5 views
Answered