Question

11. If sin A = 1/2 and cos B = 1/2, 2 poin
then A + B = ? (A) O degree (B)
30 degree (C) 60 degree (D)
90 degree
(A)​

Answer 1

Answer:

(D) 90 degree

Step-by-step explanation:

-> sin A = 1/2

which means A = 30 degree

-> cos B = 1/2

which means B = 60 degree

Thus, adding

A + B = 30 + 60 = 90 degree

Answer 2

Answer:

Let A={1,3,7,8} and B={2,4,7,9,}.Fine AΠB.