3 years ago

Find the value of arc AD

1 answer:

7 0

So hmmm if we use the "intersecting chords theorem", the angle of 93°, is really 1/2 * (arcBC + arcAD)

thus $\bf 93=\cfrac{1}{2}(\widehat{BC}+\widehat{AD})\implies 93=\cfrac{161+\widehat{AD}}{2}
\\\\\\
186=161+\widehat{AD}\implies 186-161=\widehat{AD}$

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PLEASE HELP!! I do not understand this. And can you explain it for me when I use it again?

damaskus [11]

Let's start b writing down coordinates of all points:
A(0,0,0)
B(0,5,0)
C(3,5,0)
D(3,0,0)
E(3,0,4)
F(0,0,4)
G(0,5,4)
H(3,5,4)

a.) When we reflect over xz plane x and z coordinates stay same, y coordinate changes to same numerical value but opposite sign. Moving front-back is moving over x-axis, moving left-right is moving over y-axis, moving up-down is moving over z-axis.

A(0,0,0)
Reflecting
A(0,0,0)

B(0,5,0)
Reflecting
B(0,-5,0)

C(3,5,0)
Reflecting
C(3,-5,0)

D(3,0,0)
Reflecting
D(3,0,0)

b.)
A(0,0,0)
Moving
A(-2,-3,1)

B(0,-5,0)
Moving
B(-2,-8,1)

C(3,-5,0)
Moving
C(1,-8,1)

D(3,0,0)
Moving
D(1,-3,1)

7 0

3 years ago

A quadrilateral is located on the coordinate plane with vertices at (2, 6), (2, −2), (4, −2), and (4, 6). Choose the vertices of

AURORKA [14]

Check the picture below.