Thread: help!

If cos Θ + sin Θ = √2 cos Θ;
show that cos Θ - sin Θ = √2 sin Θ.

Originally Posted by snigdha

If cos Θ + sin Θ = √2 cos Θ;
show that cos Θ - sin Θ = √2 sin Θ.

Divide the first of those equations by to see that . Similarly, the second equation is equivalent to . Now complete the argument by showing that ,