## HelpMe94 Group Title Verify This... (See Below) one year ago one year ago

1. HelpMe94

$\tan (X+\frac{ \pi }{ 2 }) = - COT(X)$

2. nubeer

familiar with double angle property?

3. HelpMe94

yes

4. nubeer

ok apply for the tan formula of double angle property...

5. nubeer

hmm but wait.. tan(pi/2) is infinity..

6. HelpMe94

Tan(pi/2) is undefined but some how the answer is possible

7. HelpMe94

at first i was going to use the sum of differences property

8. HelpMe94

but with undefined i don't know how to get this

9. nubeer

its long but i found a link for u to solve it. http://www.algebra.com/algebra/homework/Trigonometry-basics/Trigonometry-basics.faq.question.196590.html