Question

If |a|= 3 , |b| = 2 and the angle between a and b is 60∘ degree , find a.b

Answer 1

Given

★ |a| = 3 units

★ |b| = 2 units

★ Angle between |a| and |b| = 60°

To find

★ Dot product of |a| and |b|

Solution

We know that : (Scalar/ Dot product)

|a| . |b| = ab cosθ

☞ |a| . |b| = 3 * 2 cos60°

☞ |a| . |b| = 6 × 1/2

☞ |a| . |b| = 3

Answer : 3

Answer 2

Answer:

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