If sin a 4 5 and sin b 7 25 July 8, 2019 16 32 64 128 If sin a 4 5 and sin b 7 25 what is sin a b if a is in the 3rd quadrant and b is in the 2nd quadrant If 0 a b π/4 and sin(a+b)=24/25 and cos(a-b)=4/5 then find the value of tan2a Sin(a + b) Sin 5
