Answer:
Point D is invariant
Step-by-step explanation:
A geometry tool such as GeoGebra can help with this effort.
Using the geometry tool, I found it easier to move points P and Q, rather than trying to move lines m1, m2, and n. That has the same effect.
The problem setup has points A, B, and C remaining where they started. I was a little surprised to see that point D also remains in the same location. (I could not see any obvious reason why. Perhaps proportions are involved.)
Attached are two different sets of m1, m2, and n for the same A, B, C. You can see that point D remained in the same place. "Quadrangle" PQRS is colored in both figures.
Answer:
1.28f
if a term doesn't have a coefficient
it is considered that the coefficient
is 1
To solve this for c, you need to use the Law of Sines which is SinA/a=SinB/b=SinC/c. So, your equation would be Sin39/15=Sin79/c. To solve this you would do the fish method. So first, you multiply sin79 x 15. Then you would divide the answer of that by sin(39) which = c
c= 23.4
Hope this helped :)
1. C. -512√3+512i
2. B. 16(cos240°+i sin240°)
3. D. 3√2+3√6i, -3√2-3√6i
4. A. cos60°+i sin60°, cos180°+i sin180°, cos300°+i sin300°
5. D. 2√3(cos π/6+i sin π/6), 2√3(cos 7π/6+i sin 7π/6)
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