Homework Help: trig

Posted by Priscilla on Saturday, September 19, 2009 at 5:30pm.

I'm trying to see if the teacher didn't give us the right problem or if I'm just not getting it. The problem is "re-write the expression without a fraction: 4/(1-sin x)". I can do it if the problem is sin squared x but I don't know how to solve the problem given. Pls help. thx

trig - Reiny, Saturday, September 19, 2009 at 6:18pm
multiply by (1+sinx)/(1+sinx) which is really 1, so you are not changing the value, only the appearance.

4/(1-sin x)[(1+sinx)/(1+sinx)] to get
4(1+sinx)/(1 - sin^2 x)
= 4(1+sinx)/cos^2 x
= 4(sec^2 x)(1 + sinx)

Answer this Question

Related Questions

algebra homework - I am having some problem with solving a problem that the ...
english - hey I'm a 9th grader and my english teacher give me a summative ...
word problem!!!!!!! - three people decide to share the cost of a yacht. by ...
Math - 8*2sq+7*(4+1)= ? Can someone explain to me what to after the parenthesis...
Trig - I was doing this problem sin^-1 (4/5) if I'm not mistaking most ...
Belinda, Math - I aked the instructor about that problem that looked like this...
homework !! - My daughter did excellent in school last year (grade 1) She was ...
English Hamlet - I writing global statements on themes in play hamlet, i trying ...
Algebra2/Trig - sqr(x^2-4)+(x^2)/x^2+1 I got ((x^2+1)*sqr(x^2-4)+x^2)/x^2+1 But ...
Calculus - Hi~ Thank you for your help! I was trying to work on a problem about ...

For Further Reading

First Name:
School Subject:
Answer: