The central angle is at the point (0,0).
Then it's at the point (1,0)
Then it moved 210 degrees.
Let's bear in mind that we start moving the degree from it's current position.
So moving 210 degrees is moving 180 degrees plus 30 degrees.
Moving 180 degrees I like transforming linearly.
Now the location is at (-1,0)
But the distance covered will be
r = 1
= 3.67 units
c. (-0.82, -0.57)
The length of a 180° arc of a unit circle is π ≈ 3.14 units.
Use your knowledge of the circumference of a circle (the length full around) and the fact that there are 360° in the central angle of a full circle. The distance around is proportional to the angle, so an arc of measure 180° will have a length equal to
... (180°/360°) × circumference = (1/2)×circumference
For a unit circle, the circumference is 2π (= π×diameter = 2π×radius). Half that length is π units.
so a parallelogram is just like a square base times height. multiply 40 and 39 to get 1560 inches.
a triangle is base times height divided by two. so multiply 7.9 and 5 and then divide it by 2 to get 19.75inches.
the kite can be split into two separate triangles and added together to get the total area. 30 x 4 /2 which equals 60. make sure to double it for the two triangles making 120.
part a: 1.08
part b: 27.59