Question #d7a8e

1 Answer
Altrigeos
May 25, 2017

See Below.

Explanation:

Identity Required:
#sin^2(x) +cos^2(x)=1#
#sin^2(x)=1-cos^2(x)#

Now solving:
#sin(t)/(1+cos(t))=(1-cos(t))/sin(t)#
#sin(t)/(1+cos(t))*(1-cos(t))/(1-cos(t))=RHS#
#(sin(t)-sin(t)cos(t))/(1-cos^2(t))=RHS#
#(sin(t)-sin(t)cos(t))/sin^2(t)=RHS#
#(1-cos(t))/sin(t)=RHS#
QED

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