Question

12. Ā=B+C and the magnitudes of Ā, B and Care 5, 4 and 3 units, the angle between A and
Ĉis
A)cos^-1(3/5)
B)cos^-1(4/5)
C)
$\pi \div 2$
D)sin^-1(3/4)
​

Answer 1

Answer:

a cos^-1(3/5) angle between a and cis