use the addition and subtraction formulas to simplify the experession sin(x+y)sin(x-y) write the answer in terms of sin x and cos y only
Follow Math Help Forum on Facebook and Google+
Originally Posted by cm3pyro use the addition and subtraction formulas to simplify the experession sin(x+y)sin(x-y) write the answer in terms of sin x and cos y only and ...now apply that
i did ..but i am coming up with the worng answer.
Originally Posted by cm3pyro i did ..but i am coming up with the worng answer. well since I am sure you know that we have that case here...except in reverse...so it should be
View Tag Cloud