Q. 174.7( 7 Votes )

# If cos θ + tan θ

Answer :

Given,  { sin2θ + cos2θ = 1}

1 = 2 cosec θ sin θ cos θ

1 = 2 cos θ { sin θ cosec θ = 1}

cos θ = 1/2 = cos(π/3)

solution of cos x = cos α is given by

x = 2mπ ± α m Z

θ = 2nπ ± π/3, n Z

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