Posted by kelly on Tuesday, February 19, 2008 at 11:24pm.
transform the expression on left to one on right
csc xsin x to cot x cos x

trig  drwls, Tuesday, February 19, 2008 at 11:45pm
csc xsin x = (1/sinx)  sin x
= (1  sin^2 x)/sin x = (cos x * cos x)/sin x
= cos x cot x

trig  Guido, Wednesday, February 20, 2008 at 5:29pm
We have trig identities.
cscx  sinx to cotx(cos x).
cscx is the reciprocal of the sine function.
So, then:
cscx = 1/sinx
We now have:
1/sinx  sinx...Treat this like a fraction case.
1/sinx  sinx becomes (1  sin^2x)/sinx
Of course, (1  sin^2x) is one of the Pythagorean Identities, recall?
We know that (1  sin^2x) = cos^2x
We now have:
cos^2x/sinx = the right side
Done!
Answer This Question
Related Questions
 trig  I do not understand these problems. :S I'd really appreciate the help. ...
 Trig  The question is: Set up a 2 column proof to show that each of the ...
 Trigonometry  Hello all, In our math class, we are practicing the trigonometric...
 trig  For each expression in column I, choose the expression from column II to ...
 verifying trigonometric identities  How do I do these problems? Verify the ...
 algebra  Can someone please help me do this problem? That would be great! ...
 PreCalculus  I don't understand,please be clear! Prove that each equation is ...
 PreCalculus  Prove that each equation is an identity. I tried to do the ...
 trig 30  For csc^2 A1/cot A csc A, what is the simplest equivalent trig ...
 pre calc trig check my work please  sin x + cos x  = ? sin x sin ...
More Related Questions