Question

Using the formula sin(A - B) = sin A cos B - cos A sin B, find the value of sin 75

Answer 1

Answer:. (√3+1)/(2√2)

Step-by-step explanation:

Sin (120-45) = sin120×cos45-cos120×sin45= 1/2×1/√2-(-√3/2×1/√2)= 1/2√2+√3/2√2= (√3+1)/(2√2)