Question

calculate the area of the triangle determined by the two vector vector A equal to 3 ICAP + 4 j cap and vector b is equal to minus 3 ICAP + 7 J cap ​

Answer 1

•Answer

Area of the triangle determined by the two vectors =

2

1

∣

A

×

B

∣

=

2

1

∣(3

i

^

+4

j

^

)×(−3

i

^

+7

j

^

)∣

=

2

1

∣21

k

^

−12(−

k

^

)∣

=

2

1

∣33

k

^

∣

=16.5 square unit