Question

The general solution of the equation cos x + sec x = 2 is given by .. answer with explanation
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Answer 1

Cos X + 1/cos X = 2

Cos^2 X + 1 = 2*cos X

Cos^2 X -2*cos X = 1

Put cos X = y

X^2 -2*X + 1 = 0

(X - 1)^2 = 0

X = 1

Cos X = 1

X = n*3.14 where n is a multiple of 2

hope this helps u!