SOLUTION: prove the identity:
a) cot((x+pi)/(2)) = -tanx
b) tanx = (1 - cos2x)/ (sin2x)
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Question 1155757: prove the identity:
a) cot((x+pi)/(2)) = -tanx
b) tanx = (1 - cos2x)/ (sin2x)
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
prove the identity:
a) It was supposed to be cot(x + pi/2)
manipulate left side
.........use identities: , and
= ....since ,
=
=
=
so,
b)
manipulate right side:
use the following identity:
and
=
=
=......simplify
=
=
=
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