1.

Find the distance of the point veca from the plane vecr*hatn=d measured parallel to the line vecr=vecb+vec(tc).

Answer»

Solution :A line parallel to `VECC` and passing through
`A(veca)` is `vecr=veca+lamdavecc`
A POINT for some `lamda` SATISFIES plane
`""(veca+lamdavecc)*HATN=d`
or `""lamda=(vecd-veca*hatn)/(vecc*hatn)`
`THEREFORE""` Distance `= (|vecd-hata*hatn|)/(|vecc*hatn|)|vecc|`.


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