Question

(0) Find the value of sin 22 1/2°
cos 22 1/2° hence deduce sin 67
1/2°and cos67 1/2°​

Answer 1

Answer:

1. First answer 1\2root2 , second is -1\2root2

Step-by-step explanation:

sin22 1\2cos22 1\2.

=1/2*2sin22 1/2cos22 1/2=1/2*sin 45=1/2*1/root 2=1/2root2