Question

PLEASE HELP us the half angle formula for 7, 8 and 9(which is marked 8 on accident)

Answer 1

Answer:

7.

$sin105 = \frac{ \sqrt{6} + \sqrt{2} }{4}$

8.

$cos105 = \frac{ - { \sqrt{6} + \sqrt{2} } }{4}$

9.

$tan105 = - 2 - \sqrt{3}$

Answered by GAUTHMATH