Correct option is C
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