Question 10 sin(A + B) = sin A cos B + cosAsin B Not yet sin(A - B) = sin A cos B - cos Asin B answered Points out of coS(A + B) = cos A cos B - sin A sin B 5.00 CoS(A - B) = COS A cos B + sin A sin B P Flag tan A + tan B tan(A + B) = question 1 - tan Atan B tan A - tan B tan(A - B) = 1 + tan Atan B a) Simplify sin(1/2 - x) down to a single trig function using a sum or difference formula above. b) Use the sum and difference formulas to algebraically show whether or not tan(1-X) = tan(X-TT)