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What is the value of sec 330°?

a

2

b

23\frac{-2}{\sqrt{3}}

c

2-2

d

23\frac{2}{\sqrt{3}}

Answer : Option D
Explanation :

sec 330° = sec (360° – 30°)

=sec30=23=\sec 30^{\circ}=\frac{2}{\sqrt{3}}

[sec(360θ)=secθ]\left[\because \sec \left(360^{\circ}-\theta\right)=\sec \theta\right]

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