SOLUTION: Hi. How do I prove this equation to be an identity?
(tanY + sec^2 Y - tan^2Y)/secY = sinY + cosY
Everytime I solve this I always end up with 1 - sinY cosY = sin Y + cos Y
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-> SOLUTION: Hi. How do I prove this equation to be an identity?
(tanY + sec^2 Y - tan^2Y)/secY = sinY + cosY
Everytime I solve this I always end up with 1 - sinY cosY = sin Y + cos Y
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Question 602443: Hi. How do I prove this equation to be an identity?
(tanY + sec^2 Y - tan^2Y)/secY = sinY + cosY
Everytime I solve this I always end up with 1 - sinY cosY = sin Y + cos Y
I really don't know what I should do here so I hope you can help me and show me how to do this. Thank you in advance! Answer by jim_thompson5910(35256) (Show Source):
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