cos^2x + tan^2x + cos^2x = 1
cos^2x ( tan^2x + 1) = 1
cos^2x ( sec^2x) = 1
cos^2x * 1 = 1
----
cos^2x
1 = 1
Jennifer B.
asked • 12/06/20Verify each identity
cos ^2x tan ^2x+cos ^2x=1
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Jennifer B.
is there a reason that you used sec instead of sin/cos for tan?12/06/20