Find the length of BC if ABC is equilateral with AB=12x+4 and AC=8x+12
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Answer:
Step-by-step explanation:
The projection of a vector onto a vector
is defined as the projection of the vector
on the line that contains the vector
. It can be calculated using the following formula:
Where:
Is the dot product between and
which is given by:
and:
Is the magnitude of vector which can be calculated as follows:
In this sense, the projection of vector w onto vector u is:
Where the dot product between and
is:
And the magnitude of is:
Thus: