help!! prove.... secX-tanX= 1/(secX+tanX) then deduce that 0<secX - tanX <(or equal to) 1 for values of x between 0 and pi/2 fianlly.. given that secX- tanX = 1/2 find exact value of X thanks
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Originally Posted by pook help!! prove.... secX-tanX= 1/(secX+tanX)
i can help with your first question. Multiply both sides by : There's an identity: Re-arrange that to: Thus the left side side of becomes one and the proof is complete.
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