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If O is the origin and A and B are, respectively, (a1, b1) and (a2, b2), then OA⋅OB sin(AOB) is equal to

+1 vote

asked Apr 4, 2019 in JEE by kratos

If O is the origin and A and B are, respectively, (a1, b1) and (a2, b2), then OA⋅OB sin(AOB) is equal to

(A) a1a2 + b1b2

(B) a1b2 + a2b1

(C) a1b2 − a2b1

(D) a1a2 − b1b2

straight lines
jee
matrices
class-9
jee mains
coordinate geometry
class-12

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1 Answer

+4 votes

answered Jul 30, 2020 by kratos

Best answer

Correct option(C) a1b2 − a2b1

See Fig.

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