Question

SecA + tanA=x find the value of secA-tanA

Answer 1

secA+tanA=x
from the trigonometric identities,
secsquareA-tansquareA=1
(secA+tanA)(secA-tanA)=1       
(x)(secA-tanA)=1
(secA-tanA)=1/x

Answer 2

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