Practicing Success

Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Trigonometry

Question:

If $tan θ + cot θ = 2$ and θ is acute, then the value of $tan^{100}θ +cot^{100}θ$ is equal to :

Options:

2

$\sqrt{3}$

1

0

Correct Answer:

2

Explanation:

$tan θ + cot θ = 2$

Put θ = 45º

We know tan45º  = cot45º  = 1

⇒ tan 45º  + cot 45º = 2

⇒ 1 + 1 = 2

⇒ 2 = 2

Now , $tan^{100}θ +cot^{100}θ$

= $tan^{100}45º +cot^{100}45º$

= 1 + 1

= 2