Asked by Anonymous
Verify that each equation is an identity..
tan A= sec a/csca
I have notes (i wasn't here that day and teacher refuses to reteach) but I don't understand them here is the notes...
Problem w/ same directions:
Cos x= cotx/csc x
= Cosx/Sin x / 1/sinx = cosx
I just don't get this?!?!
What don't you understand?
To prove Cos x = cotx/csc x,
Just rewrite it as
(Cosx/Sin x) / (1/sinx) = cosx
It is just algebra.
Similarly,
tan a = sin a/cos a
= (1/csc a)/(1/sec a) = sec a/csc a
tan A= sec a/csca
I have notes (i wasn't here that day and teacher refuses to reteach) but I don't understand them here is the notes...
Problem w/ same directions:
Cos x= cotx/csc x
= Cosx/Sin x / 1/sinx = cosx
I just don't get this?!?!
What don't you understand?
To prove Cos x = cotx/csc x,
Just rewrite it as
(Cosx/Sin x) / (1/sinx) = cosx
It is just algebra.
Similarly,
tan a = sin a/cos a
= (1/csc a)/(1/sec a) = sec a/csc a
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