Question

2sin32*cos32/sin64 = ?;  

-6sin32/sin16*sin74 = ?;

-9sin136/cos68*cos22 = ?;

Answer 1

1) 2sin32*cos32/sin64 = sin2*32/sin64=sin64/sin64 = 1

2) -6sin32/sin16sin74 = -12sin32/2sin16cos16 = -12sin32/sin32 = -12

3) -9sin136/cos68*cos22 = -9sin136/cos68sin68= -18sin136/sin136 = -18