arrow
arrow
arrow
The value of  (1+tan2⁡θ)(1+cot2⁡θ) is:\frac{(1+tan^2⁡θ)}{(1+cot^2⁡θ )}\text{ is:}(1+cot2⁡θ)(1+tan2⁡θ)​ is:​​
Question

The value of  (1+tan2θ)(1+cot2θ) is:\frac{(1+tan^2⁡θ)}{(1+cot^2⁡θ )}\text{ is:}​​

A.

tan2θtan^2⁡θ​​

B.

cot2θcot^2⁡θ​​

C.

sec2θsec^2⁡θ​​

D.

cosec2θcosec^2 θ​​

Correct option is A

Given:

(1+tan2θ)(1+cot2θ)\frac{(1 + \tan^2 \theta)}{(1 + \cot^2 \theta)}

Formula Used:

1+tan2θ=sec2θ1+cot2θ=cosec2θ1 + \tan^2 \theta = \sec^2 \theta \\1 + \cot^2 \theta = \cosec^2 \theta

Solution:

(1+tan2θ)(1+cot2θ)=sec2θcosec2θ=1/cos2θ1/sin2θ=sin2θcos2θ=tan2θ\frac{(1 + \tan^2 \theta)}{(1 + \cot^2 \theta)} \\= \frac{\sec^2 \theta}{\cosec^2 \theta}\\ = \frac{1/\cos^2 \theta}{1/\sin^2 \theta}\\ = \frac{\sin^2 \theta}{\cos^2 \theta}\\= \tan^2 \theta

Free Tests

Free
Must Attempt

CBT-1 Full Mock Test 1

languageIcon English
  • pdpQsnIcon100 Questions
  • pdpsheetsIcon100 Marks
  • timerIcon90 Mins
languageIcon English
Free
Must Attempt

RRB NTPC Graduate Level PYP (Held on 5 Jun 2025 S1)

languageIcon English
  • pdpQsnIcon100 Questions
  • pdpsheetsIcon100 Marks
  • timerIcon90 Mins
languageIcon English
Free
Must Attempt

CBT-1 General Awareness Section Test 1

languageIcon English
  • pdpQsnIcon40 Questions
  • pdpsheetsIcon30 Marks
  • timerIcon25 Mins
languageIcon English
test-prime-package

Access ‘RRB NTPC’ Mock Tests with

  • 60000+ Mocks and Previous Year Papers
  • Unlimited Re-Attempts
  • Personalised Report Card
  • 500% Refund on Final Selection
  • Largest Community
students-icon
353k+ students have already unlocked exclusive benefits with Test Prime!
Our Plans
Monthsup-arrow