Math, asked by pranchal91, 1 year ago

prove that cos 105 degree + cos 15 degree is equal to sin 75 degree minus sin 15 degree​

Answers

Answered by neelay96
0

Answer:

cosc + cosd = 2cos(c+d/2) cos(c-d/2)

sinc - sind = 2cos(c+d/2) sin(c-d/2)

here c and d could be anything.

Attachments:
Similar questions