Question

Vectors!

Answer 1

Four points with position vectors a,b,c and d are coplanar such that
(sinalpha) a +(2sin2beta)b+(3sin3gamma)c-d=0 .Then,the least value of expression sin^2alpha+sin^2(2beta)+sin^2(3gamma) is

Answer 2

Use latex

Answer 3

Four points with position vectors a,b,c and d are coplanar such that
\[( \sin \alpha) \vec a+(2 \sin^2 \beta) \vec b+(3 \sin^3 \gamma) \vec c - \vec d = 0\]. Then, the least value of expression \[\sin^2\alpha+\sin^2(2\beta)+\sin^2(3\gamma) \] is

Answer 4

Btw, the second term and third term you wrote were not correct.
Those were 2sin2beta and 3sin3gamma

Answer 5

@astrophysics can you help please?

Answer 6

@ganeshie8 sir can you help please?

Answer 7

In this question can you please explain this?
sina+2sin2b+3sin3c=1 .
How is it derived?

Answer 8

I have no idea sorry :(

Answer 9

@Kainui

Answer 10

Okay!

Answer 11

No problem..