Simplifying after applying quotient rule

Thread starter en bloc
Start date Oct 1, 2011
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quotient Simplifying

Oct 1, 2011

en bloc

Homework Statement

http://images.calcchat.com/solutionart/etf5e/03/c/se03c01047.png

Homework Equations

The Attempt at a Solution

What am i missing, because i get: 6/4 [(-1 + tanx*secx- (tanx)^2]

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Oct 1, 2011

ehild

Science Advisor

Homework Helper

Use that sin^2x+cos^x=1 in the third row .

ehild

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