verify the given identity
cosx+sinxtanx=secx
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verify the given identity
cosx+sinxtanx=secx
Rewrite tan in terms of sin and cos. That will give you a fraction for the second term (with a sin^2 in the numerator). Now add the two terms on the left side of the equation; you'll need to get a common denominator. Now notice that you have sin^2 + cos^2 in the numerator. What does that equal?
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