value of cos²C- cos²D
Answers
Answered by
1
Hey !!
We know that
cosC - cosD = 2sin(C + D )/2 × cos(C- D/2
Similarly like that
cos²C + cosc²D
=> 2sin²(C + D)/2 ×cos²(C -D)/2
_________________
Hope it helps you !!
@Rajukumar111
We know that
cosC - cosD = 2sin(C + D )/2 × cos(C- D/2
Similarly like that
cos²C + cosc²D
=> 2sin²(C + D)/2 ×cos²(C -D)/2
_________________
Hope it helps you !!
@Rajukumar111
Similar questions