If tanA = 4, prove that
a) √secA-cosecA/secA+cosecA=1/√7
b) √1-sinA/1+cosA=1/2√2
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so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so so sorry but I don't know
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