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OpenStudy (akashdeepdeb):
What is the question @mmclaughlin ?
OpenStudy (anonymous):
Prove the following identity
OpenStudy (cwrw238):
try converting tan x and sec x to sin and cos
tan x = sinx / cos x and sec x = 1/cos x
OpenStudy (mathmath333):
this identity seems false
OpenStudy (cwrw238):
yes - I cant get them to equate
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OpenStudy (akashdeepdeb):
If we have to prove, I don't think it *can* be false.
OpenStudy (cwrw238):
- well i think what math means is there might be a mistake in the question
OpenStudy (cwrw238):
sin x cos x 1 1
---- + = ----- + ----
cos x cos x sin x
that is not an identity
OpenStudy (cwrw238):
if you plug in x = 45 degrees you see it doesn't hoild
OpenStudy (akashdeepdeb):
Okay, @mmclaughlin are you sure the question is right?
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OpenStudy (anonymous):
not entirely, it seems like that it is not equal, but I'll just talk to my teacher on monday and see if there was some double angle, addition and subtraction, or pythagorean identitity that was overlooked