Question

ange
The magnitudes of vectors A, B and C are 3.4
and 5 units respectively. If A + B = C, the
angle between A and B is:
T/2
B. Cos 0.6
?
C. tan 715 D. 14
ans with solution plz​

Answer 1

Answer:

Let

x

ˉ

=30 units

B

ˉ

=44 unit

c

ˉ

=5 units

A+B=C

′

squaring m both side

(A+B)

2

=C

2

=1

A

2

+B

2

+2ABcosθ=C

2

3

2

+4

2

+2×3×4cosθ=5

2

24cosθ=25−25

cosθ=0/2

cosθ=0

θ=cos

−1

(0)=90

o

hope this will help u