Question

If A + B + C = 90°, then sin 2A + sin 2B + sin 2C =
a) cos A. cos B. cos C
b) 2 cos A. cos B. cos C
c) 3 cos A. cos B. cos C
d) 4 cos A. cos B. cos C​

Answer 1

Answer:

answer is d

Step-by-step explanation:

sin2a+sin2b+sin2c =4cos i think