Sponsor Area

Principle Of Mathematical Induction

Question

Prove the following:

$WiredFaculty$

Solution

L.H.S. = $WiredFaculty$
= sin (A + B). sin(A - B)
= sin(6x + 4x) . sin(6x - 4x)
= sin 10x. sin2x
= sin2x. sin10x = R.H.S.
Hence, $sin squared 6 straight x minus sin squared 4 straight x space equals space sin 2 straight x space space sin 10 straight x$