Question

Sin (a + b) = 1 find the value of cos (a + b)
Anss fasttt plsz

Answer 1

Answer:

sin (a + b) = 1

sin² (a+b) + cos² (a+b) = 1

1 + cos² (a+b) = 1

cos² (a+b) = 0

Hope it helps ✨✨

Answer 2

Answer:

sin(a+b)=1

sin^2(a+b) +cos^2(a+b)

1 + cos^2 (a+b) [1 +cos^2 = sin^2]

sin^2(a+b) =1