Given:
m(ar XW) = 47.3°
To find:
The measure of arc WVY
Solution:
In the given figure XW and XY are equal arcs.
m(ar XY) = m(ar XW)
m(ar XY) = 47.3°
Measure of complete circle = 360°
m(ar WVY) + m(ar YX) + m(ar XW) = 360°
m(ar WVY) + 47.3° + 47.3° = 360°
m(ar WVY) + 47.3° + 47.3° = 360°
m(ar WVY) + 94.6° = 360°
Subtract 94.6° from both sides.
m(ar WVY) + 94.6° - 94.6° = 360° - 94.6°
m(ar WVY) = 265.4°
The measure of arc WVY is 265.4°.
The answer to this is 2.
There are a number of proofs to this. Here, we use Euclidean geometry with trigonometry. If we let the center of the circle to be O.
Then, we have the following equations for the angles
CEO = OED = 90
Since, CO = OD because they're radii of the circle, then
ΔCOD is an isosceles triangle and
OCE = ODE
CE + DE = CD
dividing the whole equation by DE
CE/DE + 1 = CD/DE
Using trigonometric functions:
CE = OC cos OCE and
DE = OD cos ODE
Substituting.
OC cos OCE / OD cos ODE + 1 = CD/DE
Since, OCE = ODE,
cos OCE = cos ODE
The equation would be reduced to:
1 + 1 = CD/DE
CD/DE =2
Answer:
Step-by-step explanation:
are we solving this ?
The correct answer is 4p+1. hope this helps...Hit that thanks button!!
Let X be the iq score of adults. X is normally distributed with mean of 100 and standard deviation of 20.
If all iq scores are converted to z -scores then we will get z scores. And the z score is standard normal variable with mean=0 and standard deviation =1
Hence the mean and standard deviation of of all z scores will be 0 and 1 respectively.
