RRB Assistant Loco Pilot and Technician Model Paper 17 with key

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Question : 52 of 75

Marks: +1, -0

Solve

(cosθ-sinθ)/(cosθ+sinθ)

=

{√3-1}/{√3+1}

, (0 ≤ θ ≤ 90°)

$π/6$
$π/3$
$π/2$
$π/4$

Solution:

By using C − D method

{2cosθ}/{-2sinθ}

=

{2√3}/{-2}

⇒

{cosθ}/{sinθ}

=

√3

cot θ =

√3

⇒ θ = 30°
=

π/6

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