Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • NCERT
  • Choose the correct option.Justify your choice. 1 + tan^2 A / 1+cot^2 A =

4.    Choose the correct option. Justify your choice.

     (iv) \frac{1+\tan ^{2}A}{1+\cot ^{2}A}=

     (A) \sec ^{2}A   (B) -1  (C) \cot ^{2}A    (D) \tan ^{2}A

Answers (1)

best_answer

The correct option is (D)

\frac{1+\tan ^{2}A}{1+\cot ^{2}A}..........................eq (i)

The above equation can be written as;

We know that \cot A = \frac{1}{\tan A}

therefore,

\\\Rightarrow \frac{1+\tan ^{2}A}{1+\frac{1}{\tan ^{2}}A}\\ \Rightarrow \tan^2A\times(\frac{1+\tan^2 A}{1+\tan^2A})\\ \Rightarrow \tan^2A

Posted by

manish

View full answer

Similar Questions

Trending Articles/News

anam-khan

CBSE 2026 Exam LIVE: Class 10 social science paper 'balanced', students likely to 'score well'; analysis
anam-khan

CBSE Class 10 Hindi Paper Analysis: Students find exam moderate, balanced, ‘student-friendly’
anam-khan

CBSE postpones March 2 Class 10, 12 board exams in Middle East; revised schedule later

Latest Question