cos 38' cos 52' - sin 38' sin52' = 0
Find out
Answers
Answered by
1
cos(90-52)cos52- sin(90-52)sin52=
sin52cos52-cos52sin52=0
sin52cos52-cos52sin52=0
Answered by
2
LHS = cos 38° × cos 52° - sin 38° × sin 52°
= cos (90 - 38 ) × cos 52 - sin (90-38) × sin 52
= sin 52 × cos 52 - cos 52 ×sin 52
= sin 52 ( cos 52 - cos 52)
= sin 52 × 0
= 0 = RHS
Similar questions