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

asked Jan 22, 2022 17.3k views

4 votes

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

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2 votes

Answer: Not an identity

Explanation:

Jkovacs answered Jan 22, 2022

3.4k points

6 votes

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:

Daniel Bolanos answered Jan 26, 2022

3.9k points

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