The sine of the angle between 3hat(i)+ha...

The sine of the angle between `3hat(i)+hat(j)+2hat(k)and 2hat(i)-2hat(j)+4hat(k)` is

0.91

0.76

0.67

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In a triangle ABC, the sides AB and AC represented by the vector 3hat(i)+hat(j)+hat(k)and hat(i)+2hat(j)+hat(k) respectively. Calcutate the angle angleABC .

Two adjacent sides of a parallelogram are respectively by the two vectors hat(i)+2hat(j)+3hat(k) and 3hat(i)-2hat(j)+hat(k) . What is the area of parallelogram?

A particle acted upon by constant forces 5hat(i) + hat(j) - 2hat(k) and 2hat(i) + hat(j) - 2hat(k) is displaced from the point 2hat(i) + 2hat(j) - 4hat(k)" " "to point" " " 6hat(i) + 4hat(j) - 2hat(k). The total work done by the forces in SI unit is

The area of the triangle having two sides vec(A)=hat(i)-2hat(j)-2hat(k)andvec(B)=2hat(i)+2hat(j)+3hat(k) is s

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