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MrRissso [65]
3 years ago
5

ac{(csc x+1)(csc x-1)}{csc^2x}\\" alt="\frac{(csc x+1)(csc x-1)}{csc^2x}\\" align="absmiddle" class="latex-formula">

cscθ·cos^2θ+sinθ= cscθ
Mathematics
1 answer:
tigry1 [53]3 years ago
7 0

Step-by-step explanation:

\frac{( \csc x+1)( \csc  x-1)}{ \csc ^2x} =  \frac{ { \csc }^{2} x - 1}{  \csc^{2} x}  \\ = 1 -   \sin^{2} x =   \cos^{2} x \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:

b. Since csc theta = 1/sin theta, we can multiply both sides by sin theta and you will end up with

\cos^{2} \theta  +  \sin^{2} \theta  = 1

which is an identity.

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