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Mathematics
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math help
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Hint : \[\large a^2 - b^2 = (a+b)(a-b)\]
Also notice that \[\large 1 = 1^2\]
the numerator becomes \[\large \tan^2\alpha -1 = (\tan\alpha)^2 - 1^2\]
see if you can factor it using the first hint
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c?
thats right! how did u get c ?
[tana-1] [tana+1] / [1+tana] which eqauls to C right?
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