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Mathematics 16 Online
OpenStudy (anonymous):

-tan^2 + sec^2x=1

OpenStudy (mertsj):

Use the identity that 1+tan^2x=sec^2x

OpenStudy (jdoe0001):

check your pythagorean identities http://www.ops.org/high/north/Portals/0/ACADEMICS/StaffPages/holleyd/calculushtml01/calc0-4notes8.gif

OpenStudy (anonymous):

can you show me how?

OpenStudy (jdoe0001):

notice the 2nd identity in the picture, solve for " 1 "

OpenStudy (mertsj):

You need to replace sec^2x with 1+ tan^2x all by yourself.

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