Question

8. What is the dot product of two vectors of magnitudes 3 and 5, if angle between them is 60
(b) 75
(c) &A
(d) 8.6​

Answer 1

Answer:

=7.5

Explanation:

dot product is ABcos(theta)

=3×5cos60

=15×1/2

=7.5

Answer 2

Dot products of two vectors A and B

= ABsin@

where,

@ is the angle between A and B

putting the magnitude

Dot product = 3 × 5 × cos60

= 15/2

= 7.5