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Use basic identities to simplify the expression. sin^2θ + tan^2θ + cos^2θ
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Use basic identities to simplify the expression. sin^2θ + tan^2θ + cos^2θ

User Childofsoong
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cos^2 theta + sin^2 theta = 1

so it simplifies to 1 + tan^2 theta

and this = sec^2 theta
User Matt Camp
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