Answer:
Hope it helps....
Step-by-step explanation:
Answer:
135 degrees
Step-by-step explanation:
all the angles in a triangle need to add to 180 degrees, so you take
180-(65+70)= 45
Then you just find the supplementary angle
45+x=180
x=135
Answer:
Step-by-step explanation:
The thing with the arc length formula, s = rt, is that t is the angle in radians. Ours is in degrees, so we have to change it:
36 × 
So the formula we use to solve for r is:

Multiply both sides by 5 over pi to get that

Since
lies in quadrant II and
lies in quadrant IV, we expect
,
, and
.
Recall the Pythagorean identities,

It follows that



Recall the angle sum identity for sine:

So we have

The area of a rhombus is 1/2 times the lengths of the diagonals
A = (1/2)(AC)(BD)
Since the diagonals bisect each other, and ed = 8, BD must be 16. Substituting in this for BD and the given area (168) we get the following:
168 = (1/2)(AC)16
168 = 8(AC)
21 = AC