PYQSide ExamsMy practice

Inverse Trigonometric Functions · Question 6

JEE Main 2026 (Online) 28th January Morning ShiftNumericalMedium📈 Topic in 10% papers+4
1

If k = ( 4 + 12 -1 ( 23 ) ) + ( 12 -1 ( 23 ) ), then the number of solutions of the equation -1(kx - 1) = -1x - -1x is .

Answer

1

Solution

Let -1 23 = 2 : 2 = 1 - 231 + 23 = 15 = 1 5

( 4 + ) = 1 + 1 51 - 1 5 = 5 + 1 5 - 1 = 3 + 52

Let -1 23 = 2 : 2 = 53

= 2 1 + 2 = 231 + 53 = 23 + 5 = 3 - 52

k = 3 + 52 + 3 - 52 = 3

Equation: -1(3x - 1) = -1x - -1x = 2 -1x - 2

Domain: -1 3x - 1 1 and -1 x 1 0 x 23

Taking sine: 3x - 1 = (2 -1x - 2 ) = - (2 -1x) = -(1 - 2x2)

2x2 - 3x = 0 x = 0 or x = 32 (rejected, outside domain)

Check x = 0: LHS = -1(-1) = - 2, RHS = 0 - 2 = - 2 ✓

number of solutions = 1

Answer: 1

JEE Main 2026 (Online) 28th January Morning Shift

Keep practising — Inverse Trigonometric Functions

2

Considering the principal values of inverse trigonometric functions, the value of the expression (2 -1 ( 2 13 ) - 2 -1 ( 3 10 ) ) is equal to :

  1. 3356
  2. - 3356
  3. - 1663
  4. 1663
JEE Main 2026 (Online) 28th January Evening Shift
3

If the domain of the function f(x) = -1 ( 1x2 - 2x - 2 ) is (- , ] [ , ] [ , ), then + + + is equal to

  1. 4
  2. 2
  3. 5
  4. 3
JEE Main 2026 (Online) 24th January Evening Shift
4

The number of solutions of -1 4x + -1 6x = 6, where - 12 6 < x < 12 6, is equal to :

  1. 2
  2. 0
  3. 3
  4. 1
JEE Main 2026 (Online) 22nd January Morning Shift
5

If the domain of the function f(x) = -1 ( 2x - 511 - 3x ) + -1(2x2 - 3x + 1) is the interval [ , ], then + 2 is equal to :

  1. 5
  2. 2
  3. 3
  4. 1
JEE Main 2026 (Online) 21st January Morning Shift
6

Let the maximum value of ( -1x )2 + ( -1x )2 for x [- 32, 1 2 ] be mn 2, where (m, n) = 1. Then m + n is equal to .

JEE Main 2026 (Online) 21st January Evening Shift
7

The value of -1 ( 1+ 2(2)-1 (2) ) - -1 ( 1+ 2 ( 12 )+1 ( 12 ) ) is equal to

  1. - 32
  2. + 52
  3. - 54
  4. + 32
JEE Main 2025 (Online) 8th April Evening Shift
8

Considering the principal values of the inverse trigonometric functions, -1 ( 32x + 12 1 - x2 ), - 12 < x < 1 2, is equal to

  1. -5 6 - -1x
  2. 5 6 - -1x
  3. 6 + -1x
  4. 4 + -1x
JEE Main 2025 (Online) 4th April Morning Shift
9

The sum of the infinite series -1 ( 74 )+ -1 ( 194 )+ -1 ( 394 )+ -1 ( 674 )+ is :

  1. 2+ -1 ( 12 )
  2. 2- -1 ( 12 )
  3. 2- -1 ( 12 )
  4. 2+ -1 ( 12 )
JEE Main 2025 (Online) 4th April Evening Shift
10

If y = ( 3 + -1 x2 ), then (x - y)2 + 3y2 is equal to .

JEE Main 2025 (Online) 2nd April Evening Shift
11

Let S = \x : -1x = + -1x + -1(2x + 1) \. Then x S(2x - 1)2 is equal to .

JEE Main 2025 (Online) 29th January Morning Shift

All Inverse Trigonometric Functions PYQs →

PDFDownload Inverse Trigonometric Functions PYQs as PDF Free, with answer key and a QR code to every solution — print it or study offline⬇
All JEE Main Mathematics chapters