Question

resultant of three vectors of magnitude 10 each be 10 if angle be​

Answer 1

Answer:

Answer:

Perfect questions for guys interested in maths..

2. The value of x + x(xx) when x = 2 is:

(a) 10, (b) 16, (c) 18, (d) 36, (e) 64

Solution:

x + x(xx)

Put the value of x = 2 in the above expression we get,    

2 + 2(22)

= 2 + 2(2 × 2)

= 2 + 2(4)

= 2 + 8

= 10

Answer: (a)

Explanation:

Answer 2

Answer:

Angle between the vectors

θ= 60°-30° =30°.  

Hence magnitude of the resultant

= √(A²+B²+2ABcosθ)  

= √(10²+10²+2.10.10.cos30°)  

=√(200+200.√3/2)

=10√(2+√3)  

= 19.32 units  

Since the vectors have equal magnitudes so the resultant bisects the angle θ between them.

The angle between resultant and vector  A =30°/2 =15°.

So angle between resultant and X-axis =15°+30° =45°