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Unit vectors veca and vecb ar perpendicu...

Unit vectors `veca and vecb` ar perpendicular , and unit vector `vecc` is inclined at an angle `theta` to both `veca and vecb . If alpha veca + beta vecb + gamma (veca xx vecb)` then.

A

`l=m`

B

`n^(2)=1-2l^(2)`

C

`n^(2)=-cos2alpha`

D

`m^(2)=(1+cos2alpha)/(2)`

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ARIHANT MATHS ENGLISH-PRODUCT OF VECTORS-Exercise (More Than One Correct Option Type Questions)
  1. Let a, b and c be non-zero vectors and |a|=1 and r is a non-zero vecto...

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  2. If veca and vecb are two unit vectors perpendicular to each other and...

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  3. Given three non-coplanar vectors OA=a, OB=b, OC=c. Let S be the centre...

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  4. If a=hat(i)+hat(j)+hat(k) and b=hat(i)-hat(j), then the vectors (a*hat...

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  5. If vec a=x hat i+y hat j+z hat k , vec b=y hat i+z hat j+x hat k and v...

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  6. If veca, vecb, vecc are three non-zero vectors, then which of the foll...

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  7. Unit vectors veca and vecb ar perpendicular , and unit vector vecc is ...

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  8. If a, b, c are three non-zero vectors, then which of the following sta...

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  9. Let veca and vecb be two non- zero perpendicular vectors. A vector vec...

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  10. If veca and vecb are any two unit vectors, then find the greatest post...

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  11. If a is perpendicular to b and p is non-zero scalar such that pr+(r*b)...

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  12. In a four-dimensional space where unit vectors along the axes are h...

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  13. A vector(d) is equally inclined to three vectors a=hat(i)-hat(j)+hat(k...

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  14. If a, b, c are non-zero, non-collinear vectors such that a vectors suc...

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  15. Given three vectors veca, vecb and vecc are non-zero and non-coplanar ...

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  16. If r=hat(i)+hat(j)+lambda(2hat(i)+hat(j)+4hat(k)) and r*(hat(i)+2hat(j...

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  17. If vectors veca and vecb are two adjecent sides of a paralleogram, the...

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  18. Let a, b, c be three vectors such that each of them are non-collinear,...

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  19. If a, b and c are non-collinear unit vectors also b, c are non-colline...

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  20. If a=(1)/(7)(2hat(i)+3hat(j)+6hat(k)): b=(1)/(7)(6hat(i)+2hat(j)-3hat...

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