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Answer:
Step-by-step explanation:
Jamie is correct.
two angles are equal in an isosceles triangle.
let the angles be x,x,y
if she knows x
then y=180-(x+x)=180-2x
so she can find y
similarly if she knows y then she can calculate x.
Answer:
We know that angles B and D/A and C are congruent, this is because all opposite angles within a parallelogram are congruent.
(6x+40) + (x) = 180
7x + 40 = 180
7x = 140
x = 20
The Value of X is 20.
3/2
The slope is always “m” in y=mx+b so the number in front of the x—in this case 3/2. b (3 in this case) is the y-intercept
Find length CD first, which is the hypotenuse of the triangle.
PD = opposite
Opposite & hypotenuse = SOH or sin
Sin(27) = 15/H
x h, then ÷ sin(27)
H = 15/sin(27)
H = 33.04....
Move to triangle CDR:
15 is length opposite the angle we're after.
So far, we've got the hypotenuse (which we just found to be 33.04....) & the opposite of our triangle
Hypotenuse & opposite = SOH
Sin(x) = 15/33.04... but, to find the angle we do inverse of sin
sin-1(15/33.04...) = x
x = 27
(33.04... means I used the full numbers displayed on my calculator)
Thus, RCD is 27 degrees
Hope this helps!
