Okay, good luck then and welcome to the forum.

]]>Please let me know what your evil teacher thinks of it. He sounds like a moderator I know on another forum. If they are the same, he will absolutely hate my answer...

]]>One of the easiest ways is to find an obvious counterexample:

so sec(0) is 1 / 1 because cos(0) is 1.

because

]]>please can u help me with this one...

prove that sin t + sec t = tan t is not an identity. and please with little bit more explanation about how you solving

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