The set of value of x for which the angle between the a = 2x^2i + 4xj + k and b = 7i - 2j + xk is obtuse is : Option 1: (0, 1/2) Option 2: (0, 1/3) Option 3: (1/2, 1/3) Option 4: (0, 1)

The answer is '(0, 1/2)'. View full solution:

CUET Mathematics - The set of value of x for which the angle between the a = 2x^2i + 4xj + k and b = 7i - 2j + xk is obtuse is : | PYQs + Solutions

CUET Mathematics 2023 15 June Shift 2

Algebra

Medium

$\left(0, \frac{1}{2}\right)$

$\left(0, \frac{1}{3}\right)$

$\left(\frac{1}{2}, \frac{1}{3}\right)$

$(0, 1)$

✅ Correct Option: 1

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Match List-I with List-II

List-I	List-II
(A) Angle between $\hat{i} - \hat{j}$ and $\hat{i} + \hat{j}$	(I) $\pi$
(B) Angle between $\hat{i} - \hat{j} + \hat{k}$ and $-\hat{i} + \hat{j} - \hat{k}$	(II) $\frac{3\pi}{4}$
(C) Angle between $\hat{i} + \hat{j}$ and $-\hat{i}$	(III) $\frac{\pi}{4}$
(D) Angle between $\hat{i} + \hat{k}$ and $\hat{k}$	(IV) $\frac{\pi}{2}$

Choose the correct answer from the options given below:

CUET Mathematics 2023 15 June Shift 2 PYQs

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