Showing posts with label linear combination. Show all posts
Showing posts with label linear combination. Show all posts

Wednesday, April 22, 2015

Trigonometric Inequality

Show that :

[math]\left( {\sin x + a\cos x} \right)\left( {\sin x + b\cos x} \right) \leq 1 + \left( \frac{a + b}{2} \right)^2[/math]