Question

If cos (90°-A)=0, then Sin (A+B)=
A) O
B) 2
C) 3
D) None of the above​

Answer 1

Answer:

D) none of the above

Step-by-step explanation:

cos(90°-A)=0

or, cos(90°-A)=cos90°

or, 90°-A=90°

or, A=0

sin(A+B)

=sin(0+B)

=sinB