Hi i need help for this question. Stucked at it for a long time (Doh)

Given That Sec A - tan A = 2. determine the value of ( sec A + tan A ) without

solving for A.

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- August 27th 2010, 02:55 AMNutsTrigo Qn
Hi i need help for this question. Stucked at it for a long time (Doh)

Given That Sec A - tan A = 2. determine the value of ( sec A + tan A ) without

solving for A. - August 27th 2010, 03:07 AMmr fantastic
- August 27th 2010, 03:23 AMArchie Meade
- August 27th 2010, 03:33 AMNuts
- August 27th 2010, 03:38 AMProve It
Usually the easiest way to simplify trigonometric expressions is to multiply by the conjugate, then apply a trigonometric identity.

In your case, you are told

.

Now use the Pythagorean Identity to simplify the LHS and you should be able to solve for . - August 27th 2010, 03:56 AMNuts
- August 27th 2010, 04:00 AMArchie Meade