A) \[1/\sqrt{6}\]
B) 1/3
C) \[1/\sqrt{3}\]
D) \[\sqrt{2/3}\]
Correct Answer: A
Solution :
By sine rule, the sine of the angles are proportional to the lengths of opposite sides. i.e. \[\frac{\sin \,A}{a}=\frac{\sin \,B}{b}=\frac{\sin \,C}{c}\] Given a \[\Delta ABC\] in which \[\angle ABD=60{}^\circ \] and \[\angle ACD = 45{}^\circ \], also \[\frac{BD}{DC}=\frac{1}{3}\].You need to login to perform this action.
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