Two vectors having equal magnitude of 5 units, have an angle of 60º between them. Find the magnitude of their resultant vector and its angle from one of the vectors.
A
5, 20º
B
5 
, 30º
, 30º
C
3, 40º
D
3, 50º
Text Solution
Verified by ExpertsThe correct answer is:
B
a = b = 5 unit and θ θ = 60 º
R= 
= 5 
unit
tan α = 
= 
= 
= tan30º
∴ ∴ α α = 30
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