If a, b, c are three vectors such that |a| = 2, |b| = 5, |c| = 3 and a + 2b - 3c = 0, then angle between b and c is equal to: Option 1: ^-1(-23/40) Option 2: ^-1(-177/180) Option 3: ^-1(23/40) Option 4: ^-1(177/180)

The answer is '^-1(177/180)'. View full solution:

CUET Mathematics - If a, b, c are three vectors such that |a| = 2, |b| = 5, |c| = 3 and a + 2b - 3c = 0, then angle between b and c is equal to: | PYQs + Solutions

CUET Mathematics 2026 21st May Shift 2

Algebra

Medium

core

$\cos^{-1}\left(\dfrac{-23}{40}\right)$

$\cos^{-1}\left(-\dfrac{177}{180}\right)$

$\cos^{-1}\left(\dfrac{23}{40}\right)$

$\cos^{-1}\left(\dfrac{177}{180}\right)$

✅ Correct Option: 4

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CUET Mathematics 2026 21st May Shift 2 PYQs

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