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secondary 4 | A Maths
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How do I prove this? Am I on the right track? Thanks
Date Posted: 7 years ago
Views: 639
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From the 2nd to 3rd step, if you divided by cos x you have to divide all terms of the numerator however you only divided the (cos x)^2.
Actually if you did the division throughout, you would have ended back the at first step.
The solution I provided continues from your 2nd step and I made use of the identity (sinx)^2 + (cosx)^2 = 1.
Cheers!
Actually if you did the division throughout, you would have ended back the at first step.
The solution I provided continues from your 2nd step and I made use of the identity (sinx)^2 + (cosx)^2 = 1.
Cheers!
Date Posted:
7 years ago
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