Question

42. ABC is a triangle inscribed in a circle with
centre 0. Let a = Z BAC, where 45° < a < 90°
Let ß = BOC. Which one of the following is
correct?
(a) cos B =
1- tan2 α
1+tanda
(b)
cos B =
1+tan a
1-tand a
(c)
cos B =
2 tan a
1+tan a
(d) sin B = 2 sin a​

Answer 1

Answer:

hbbhjjnbgyyjjvc jujhhvf