Question

If cos (90

-A)=0, then Sin (A+B)=

A) 0

B) 2

C) 3

D) none
pls solve and prove the answer​

Answer 1

Answer:

none

Step-by-step explanation:

cos(90-A)=0

=> sin A=0 <complementary angle>

=> A=0 degree <0= sin 0>

sin(A+B) = sinAcosB + cosAsinB

= 0+cos 0 sinB

=sinB

Answer 2

Answer:

your ans is d none

have a nice day