Question

If (tan θ + cot θ) = 5 then (tan²θ + cot²θ) = ?

पर्याय

• 27

• 25

• 24

• 23

Answer 1

23

Explanation:

(tan θ + cot θ)² = 5²

⇒ tan²θ + cot²θ + 2 tan θ cot θ = 25

⇒ tan²θ + cot²θ + 2 = 25

⇒ tan²θ + cot²θ = 23