Question

if sec A+tan A=2 then what is the value of sec A?​

Answer 1

SecA +tanA=2

(SecA-tanA)^2=1

(SecA+tanA)(SecA-tanA)=1

SecA-tanA=1/2

SecA+tanA=2

SecA-tanA=1/2

_. +. -. (Subtraction)

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2tanA=2-1/2

2TanA=4-1/2

TanA=3/4. (opp/adj)

(Draw the figure you can understand and do Pythagoras therom)

(Hypotenuse =5)

SinA+cosA= 3/5+4/5=7/5

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