Tid T.

asked • 03/19/13

show that cos(A-B) - cos(A+B) = 2sinA sinB

Anybody have  an idea how to solve that question... think needs to simplify first and use identities to solve.. but cant even start it..


please any help is welcome..

1 Expert Answer


Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.


Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.