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Help with Trigonometric Identities!

From C3, Exercise 3D:

Solve the identity:
cosec²Acos²A = cosec²A - 1

I haven't gone through this before, really confused on where to start - especially which side.
Original post by Anonypleb
From C3, Exercise 3D:

Solve the identity:
cosec²Acos²A = cosec²A - 1

I haven't gone through this before, really confused on where to start - especially which side.


I presume you mean show that.

Start on the LHS and recall that cos⁡2x+sin⁡2x=1\cos^2 x + \sin^2 x = 1
(edited 9 years ago)
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Anonypleb
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Original post by usycool1
I presume you mean show that.

Start on the LHS and recall that cos⁡2x+sin⁡2x=1\cos^2 x + \sin^2 x = 1


Yeah I just figured it out as you said that - thanks :smile:
Original post by Anonypleb
Yeah I just figured it out as you said that - thanks :smile:


Awesome :smile:

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