jee-advanced 2000 Q11

jee-advanced · India · screening Exponential Functions MCQ on Function Properties
11. In a triangle $A B C , 2 a c \sin 1 / 2 ( A - B + C ) =$
(A) $a 2 + b 2 - c 2$
(B) $c 2 + a 2 - b 2$
(C) $b 2 - c 2 - a 2$
(D) $c 2 - a 2 - b 2$
11. In a triangle $A B C , 2 a c \sin 1 / 2 ( A - B + C ) =$\\
(A) $a 2 + b 2 - c 2$\\
(B) $c 2 + a 2 - b 2$\\
(C) $b 2 - c 2 - a 2$\\
(D) $c 2 - a 2 - b 2$\\