The movie ended at 1:23 A.M.
lol sorry if its wrong
Taking Rhs
1/2 [sin(x+y)+ sin (x-y)]
using sinA + sin B = 2 cos (A+B)/2 cos( A - B)/2
1/2 [ 2 Cos ( x+y+x-y)/2 . Cos (x+y-x+y)/2]
=Cos 2x/2. Cos 2y/2 = Cos x . Cos y
Hence true
The answer to question 2 is 17/20
3/5+1/4=?
They need common denominator which is 20
12/20+5/20=17/20
Step-by-step explanation:
A ; 2 × 12 = 3×4
B; 2 × 12 = 3×6
C ; 2 × 18 = 3×18
D; 2 × 36 = 3× 12