csc A - sin A to cos A cot A and sin A cot^2 A (sec - 1) to sin A
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Originally Posted by xahjika csc A - sin A to cos A cot A and sin A cot^2 A (sec - 1) to sin A
Last edited by Mush; January 22nd 2009 at 08:44 AM.
Are you sure you've written the second one out properly?
Originally Posted by Mush Are you sure you've written the second one out properly? oops sorry sin (A) cot^2 (A) (sec^2 (A) - 1) to sin (A)
Originally Posted by xahjika oops sorry sin (A) cot^2 (A) (sec^2 (A) - 1) to sin (A) Consider the identity: Divide it by Hence your problem becomes: And you know that Does that help?
yes it is.. thanks a lot... coz signs bothers me
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