Vectors a, b, c are such that a + b + c = 0 and |a| = |b| = |c| then, the angle between any two of them, is Option 1: 60° Option 2: 90° Option 3: 120° Option 4: 150°

The answer is '120°'. View full solution:

CUET Mathematics - Vectors a, b, c are such that a + b + c = 0 and |a| = |b| = |c| then, the angle between any two of them, is | PYQs + Solutions

CUET Mathematics 2026 19th May Shift 2

Algebra

Medium

core

60°

90°

120°

150°

✅ Correct Option: 3

Related questions:

7 Aug Shift 2

Match List - I with List - II.

	List - I (Two given vector)		List - II (Projection of $\vec{a}$ on $\vec{b}$ )
(A)	$\vec{a} = \hat{i} - \hat{j}$ , $\vec{b} = \hat{i} + \hat{j}$	(I)	$\frac{2}{\sqrt{5}}$
(B)	$\vec{a} = \hat{i} + \hat{j}$ , $\vec{b} = 2\hat{i} - \hat{k}$	(II)	0
(C)	$\vec{a} = \hat{j} + \hat{k}$ , $\vec{b} = \hat{i} + \hat{k}$	(III)	$\sqrt{2}$
(D)	$\vec{a} = 2\hat{i} + 3\hat{j}$ , $\vec{b} = \hat{i} - \hat{k}$	(IV)	$\frac{1}{\sqrt{2}}$

Choose the correct answer from the options given below :

18th May Shift 1

If $|\vec{a}| = 2$ , $|\vec{b}| = 3$ and $|2\vec{a} - \vec{b}| = 5$ , then $|2\vec{a} + \vec{b}|$ equals to

19 May Shift 1

If $\vec{a} = 3\hat{i} - 6\vec{j} + \hat{k}$ and $\vec{b} = 2\hat{i} - 4\vec{j} + \lambda\hat{k}$ are such that $\vec{a} \parallel \vec{b}$ , then $3\lambda + 2 =$

CUET Mathematics 2026 19th May Shift 2 PYQs

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