chetan2u wrote:
MathRevolution wrote:
In the x-y plane, a triangle ABC connected by 3 points A(0,4), B(-5,0), and C(c,0) is there. If the angle from a point A is 90o, what is the value of c?
A. 16/5
B. 12/5
C. 9/5
D. 7/5
E. 3/5
*An answer will be posted in 2 days.
A. 16/5
B. 12/5
C. 9/5
D. 7/5
E. 3/5
*An answer will be posted in 2 days.
Hi,
GOOD Q..
we can know from the information that AB is PERPENDICULAR to AC...
so BEST method would be to find the slope..
slope of AB =\( \frac{0-4}{-5-0} =\frac{4}{5} \)3o22sjzd]
...
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