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 9 sec^2 A - 9 tan^2 A =

4.    Choose the correct option. Justify your choice.

     (i) 9\sec^{2}A-9\tan^{2}A=

    (A) 1    (B) 9    (C) 8    (D) 0

Answers (1)

best_answer

The correct option is (B) = 9

9\sec^2A-9 \tan ^2A = 9(\sec^2A- \tan ^2A).............(i)

and it is known that \sec^2\theta -\tan^2\thea = 1
Therefore, equation (i) becomes, 9\times 1 = 9
 

Posted by

manish

View full answer

Similar Questions

Trending Articles/News

anam-khan

CBSE allows Class 10 students with basic math to study mathematics in 11th for 2025-26
anam-khan

CBSE announces post-result schedule for Class 10, 12 board exams 2025; apply for answer sheet from May 21
anam-khan

Depressed over 61% in CBSE 10th result 2025; Kota student dies by suicide

Latest Question