Asked by Anonymous
Coordinate Geometry
A=(7,4)
B=(2,0)
Gradient of AB = 4/5
Equation of AB in ax+by=0 for is 4x-5y-8=0.
The length of AB in surd form is root41.
The point C has coordinates (2,t), where t>0 and AC=AB.
a) find the value of t.
b) without plotting point, find the area of triangle ABC.
Thankyou x
A=(7,4)
B=(2,0)
Gradient of AB = 4/5
Equation of AB in ax+by=0 for is 4x-5y-8=0.
The length of AB in surd form is root41.
The point C has coordinates (2,t), where t>0 and AC=AB.
a) find the value of t.
b) without plotting point, find the area of triangle ABC.
Thankyou x
Answers
Answered by
Steve
clearly, C = (2,√41)
Since B and C are on the same vertical line (x=2), which is 5 units from (7,4), the triangle has base √41 and altitude 5.
Since B and C are on the same vertical line (x=2), which is 5 units from (7,4), the triangle has base √41 and altitude 5.
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