Answer to Question #751 in Trigonometry for Amaan

Question #751
Write in terms of sin and cos and simplify.

cot(theta)/(csc(theta)-sin(theta))
1
Expert's answer
2010-10-10T23:41:09-0400
Cot (θ)/csc(θ)-sin(θ)=(cos(θ)/sin(θ))/(1/sin(θ))-sin(θ)=
=(cos(θ)/sin(θ))/(1-sin2(θ))/sin(θ)=
=(cos(θ)/sin(θ))/(cos2(θ)/sin(θ))=
=(sin(θ)cos(θ))/(sin(θ)cos2(θ))=
=1/cos(θ)=sec(θ)

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