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.

Printable View

- Aug 27th 2010, 03:55 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. - Aug 27th 2010, 04:07 AMmr fantastic
- Aug 27th 2010, 04:23 AMArchie Meade
- Aug 27th 2010, 04:33 AMNuts
- Aug 27th 2010, 04:38 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 . - Aug 27th 2010, 04:56 AMNuts
- Aug 27th 2010, 05:00 AMArchie Meade