Q16 / 71 · NTA Abhyas (JEE Main) 2020 · Mathematics · Inverse Trigonometric Functions

If sin-1⁡13+sin-1⁡23=sin-1⁡x, then the value of x is

  • A
    0
  • B
    (5-42)9
  • Correct answer
    C
    (5+42)9
  • D
    π2

Solution

Given that, sin-1⁡13+sin-1⁡23=sin1⁡x

Taking sine on both sides

⇒⁡131-49+231-19=⁡x

⇒⁡13.53+23.83=⁡x

⇒ ⁡5+429=⁡x

∴    x=5+429

Hence, the correct answer is option: 'C'.

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