Math, asked by Swethaidanavi, 1 year ago

Sin 35 sin 55 - cos 35 cos 55 =??

Answers

Answered by mysticd
5
use trigonometric identity (1), we get the answer
Attachments:

mysticd: i am sorry,
mysticd: cos 90 = 0
mysticd: answer is 0
Similar questions