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If sin θ + cos θ = √3, then the value of tan θ + cot θ is:
Question

If sin θ + cos θ = √3, then the value of tan θ + cot θ is:

A.

2

B.

1/2

C.

1

D.

0

Correct option is C

Given:

sin θ + cos θ = √3

Formula used:
(sin θ + cos θ)² = sin²θ + cos²θ + 2sinθcosθ

and sin²θ + cos²θ = 1

Solution:
(sin θ + cos θ)² = (√3)²
=> 1 + 2sinθ.cosθ = 3
=> 2sinθ.cosθ = 2
=> sinθ.cosθ = 1

Now,
tan θ + cot θ = (sin²θ + cos²θ) / (sinθ.cosθ)
=> tan θ + cot θ = 1 / 1
=> tan θ + cot θ = 1

Correct answer is (c) 1

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