Help!! Show that 1 + tan2(x) = sec2(x)

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PhilD asked May 2, 2022

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Help!!
Show that 1 + tan2(x) = sec2(x)

Mathematics
high-school

PhilD asked May 2, 2022

by PhilD

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Answer: Not an identity

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Aric TenEyck answered May 4, 2022

by Aric TenEyck

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Answer:

tan2(x) + 1 = sin2(x)/cos2(x) + 1 = [sin2(x) + cos2(x)]/cos2(x) = 1/cos2(x) = (1/cos(x))2 = sec2(x). Thus tan2(x) + 1 = sec2(x).

Explanation:

Bmarkham answered May 9, 2022

by Bmarkham

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