Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NDA 2019
Exam
NDA
Year
2019
Subject
Mathematics
Chapter
Inverse Trigonometric Functions

NDA 2019 · Mathematics · Inverse Trigonometric Functions

What is the value of ^ -1 (4)/(5)+ ^ -1 (5)/(4)-(π)/(2) ?

What is the value of sin⁡−145+sec⁡−154−π2\sin ^{-1} \frac{4}{5}+\sec ^{-1} \frac{5}{4}-\frac{\pi}{2} ?

Options

  1. Aπ4\frac{\pi}{4}
  2. Bπ2\frac{\pi}{2}
  3. Cπ\pi
  4. D0

Correct answer

D. 0

Step-by-step solution

sin⁡−145+sec⁡−154−π2=sin⁡−145+cos⁡−145−π2=π2−π2=0\sin ^{-1} \frac{4}{5}+\sec ^{-1} \frac{5}{4}-\frac{\pi}{2}=\sin ^{-1} \frac{4}{5}+\cos ^{-1} \frac{4}{5}-\frac{\pi}{2}=\frac{\pi}{2}-\frac{\pi}{2}=0
Practice Inverse Trigonometric Functions on Quantrex Academy →

More from Inverse Trigonometric Functions

Consider the following in respect of inverse circular functions : I. ^ -1 (-x)=- ^ -1 x… NDA 2026What is [2 ^ -1 (1)/(2)-(π)/(4)] equal to ? NDA 2026If ^ -1 k + ^ -1 (1)/(2) = (π)/(4) , then what is the value of k ? NDA 2025What is the value of [(1)/(2) ^ -1 ( 2 3 )]? NDA 2025Consider the following for the two (02) items that follow: Let y = ^ -1 (x - (4x^3)/(27))… NDA 2025If k is a root of x^2 - 4x + 1 = 0 , then what is ^ -1 k + ^ -1 (1)/(k) equal to? NDA 2025What is ^ -1 9 + cosec^ -1 ( 41 4 ) equal to? NDA 2025What is ^2 ( ^ -1 2)+ ^2 (cosec^ -1 3) equal to? NDA 2024If ^ -1 x= ^ -1 x , then which one of the following is correct? NDA 2024What is 15+ ^2((π)/(4)-2 ^ -1 3) equal to? NDA 2024If 4 ^ -1 x+ ^ -1 x=π , then what is ^ -1 x+4 ^ -1 x equal to? NDA 2024What is ^ -1 ((a)/(b))- ^ -1 ((a-b)/(a+b))equal to? NDA 2024What is 2 ((1)/(2) ^ -1 5 3 )equal to? NDA 2023If ^ -1 p-cosec^ -1 q=0 , where p > 0, q > 0 ; then what is the value of ^ -2 + ^ -2 ? NDA 2023What is 1+ ^2 ( ^ -1 ( 3 17 ))equal to? NDA 2023What is ^ -1 (cosec^ -1 2) equal to? NDA 2022 Full Inverse Trigonometric Functions list Inverse Trigonometric Functions JEE Maths PYQsJEE Mathematics PYQs All NDA PYQs