SOLUTION: Simplify the expression as much as possible: cos(2t)/(cos(t)+sin(t))

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Question 1155698: Simplify the expression as much as possible: cos(2t)/(cos(t)+sin(t))
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

cos%282t%29%2F%28cos%28t%29%2Bsin%28t%29%29...............use identity cos%282t%29=cos%5E2%28t%29+-+sin%5E2%28t%29

=%28cos%5E2%28t%29+-+sin%5E2%28t%29%29%2F%28cos%28t%29%2Bsin%28t%29%29........factor numerator

=%28cos%28t%29+-+sin%28t%29%28cos%28t%29%2Bsin%28t%29%29%29%2F%28cos%28t%29%2Bsin%28t%29%29....simplify

=

=cos%28t%29+-+sin%28t%29