Question

Solve The Problem...​

Answer 1

HI DEAR SHRESTA HERE!!!PLS SEE THE ANSWER !!!!

USING FORMULAS:-

 COS C+COS D  = 2COS(C+D/2).COS(C-D/2)

 COS(A-B)  =  COS A.COS B  +  SIN A.SIN B

LHS:-

=2cos(95+25/2)cos(95-25/2)

=2cos(120/2)cos(70/2)

=2cos60cos35

=2*1/2*cos 35

=cos35

=cos(45-10)

=cos45cos10 +sin45sin10

=1/√ 2 .cos10 +  1/√ 2. sin10

=1/√ 2(cos10  +  sin10)

=RHS

PLS THANK MY ANSWER ....!!!!!!!!!

:)