Vang328 Vang328

04-03-2021
Mathematics

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Verify the identity sin^2x = cos^2x sec^2x-cos^2x

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reeserl reeserl

05-03-2021

Answer:

Step-by-step explanation:

The right side of the identity

[tex]cos^{2} x sec^{2} x - cos^{2} x\\= cos^{2} x (\frac{1}{cos^{2} x} ) - cos^{2} x\\= 1 - cos^{2} x\\= sin^{2} x[/tex]

which is the same as the left side of the identity

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