SOLUTION: Derive the second Pythagorean Identity tan^2(theta)+1=sec^2(theta) from the Pythagorean Theorem.

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Question 778054: Derive the second Pythagorean Identity tan^2(theta)+1=sec^2(theta) from the Pythagorean Theorem.
Answer by solver91311(24713) About Me  (Show Source):
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Pythagorean Identity:

Divide both sides by



A little algebra music:



Since and , just make the substitutions:



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