Ask your own question, for FREE!
Mathematics 20 Online
OpenStudy (anonymous):

Simplify a) sin(90-a) - cos(180 - a) +tg(180 - a ) b) cos(180-a) + sin(90-a) * cotg (180-a) i just cant remember the formulas and not finding the right ones in internet :l

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!