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Saturday, 31 October

JEE Main 2020 · MathsMultiple choiceSingle correctMediumMulti-step

JEE Main 2 September 2020, Shift 2, Maths Q64

Question 64 of 75 in this shift, Maths question 14 of 25.

The set of all possible values of θ\theta in the interval (0,π)(0,\pi) for which the points (1, 2)(1,\,2) and (sin⁡θ,cos⁡θ)(\sin\theta,\cos\theta) lie on the same side of the line x+y=1x+y=1 is :
  1. (1)(0,3π4)\left(0,\frac{3\pi}{4}\right)
  2. (2)(0,π4)\left(0,\frac{\pi}{4}\right)
  3. (3)(π4,3π4)\left(\frac{\pi}{4},\frac{3\pi}{4}\right)
  4. (4)(0,π2)\left(0,\frac{\pi}{2}\right)Official answer

Official answer

Option 4

NTA final key (Sep 2020).

Same idea in other shifts

Asked 2× in all
  1. 4 Aug 2021, Shift 1 · Q72If (k,3)(k, 3) is an interior point of the triangle formed by the lines, x+y=4x+y=4, x−y=5x-y=5 and x−2y+2=0x-2y+2=0, then the set of all values of k is…MediumSingle correct

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.