IB HL Math AA | Trig past exam question 2

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"Show that cosA + sinA / cosA - sinA = sec2A + tan2A"
This was question 9 on the HL Paper 1 in Timezone 2 in the 2012 summer session.
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Thank you so much for your past exams series ❤This is making me almost enjoy IB math :, )

rosyclara