A triangle has corners at #(2 , 4 )#, ( 3, 1 )#, and #( 8, 3 )#. What are the endpoints and lengths of the triangle's perpendicular bisectors?

Answer 1

One end-pt. of all perp. bsctrs. is #O(169/34,113/34)# & other end. pts. are #D(11/2,2),E(5,7/2), & F(5/2,5/2).#

Length of one perp.bsctr. #OD# is #sqrt(2349)/34.#

Let us name the vertices of #Delta# as #A(2,4),B(3,1),C(8,3)# & let the mid-pts. of sides #BC,CA,AB# be #D,E,F# resp.
Clearly, the mid-pts. are #D(11/2,2),E(5,7/2), & F(5/2,5/2).#
We know that three perp. bsctrs. of sides of a #Delta# are concurrent at a pt., known as the Circumcentre of #Delta ABC.# Let us call it #O.#
To find #O#, we find the eqns. of two perp.bstrs., namely, #OD & OE.#
Eqn. of #OD#:-
#OD# is perp. to #BC#, & slope of #BC# is #(3-1)/(8-3)=2/5,# so, slope of #OD# must be #-5/2#. In addition, #D in OD.#
#:.# eqn. of #OD# is, #y-2=-5/2(x-11/2),# or, #4y-8=-5(2x-11)=-10x+55,# i.e., #10x+4y=63...........(1).#
On the same line, we can work out the Eqn. of #OE# as #12x-2y=53......(2)#
Solving (1) & (2), we get #O(169/34,113/34)#
Length #OD =sqrt{(169/34-11/2)^2+(113/34-2)^2}=sqrt(2349)/34#
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Answer 2

The endpoints of the perpendicular bisectors are:

  1. Endpoint 1: (5.5, 2.5)
  2. Endpoint 2: (3.5, 2.5)
  3. Endpoint 3: (5.5, 5)

The lengths of the perpendicular bisectors are:

  1. Length 1: √10
  2. Length 2: √13
  3. Length 3: √26
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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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