Answer:
The measure of the third arc is 
Step-by-step explanation:
step 1
we know that
The measurement of the external angle is the semi-difference of the arcs which comprises
in this problem
Let
x----> the greater arc of the circle intercepted by the secant and the tangent
y----> the smaller arc of the circle intercepted by the secant and the tangent

----> equation A

-----> equation B
Substitute equation B in equation A and solve for y

Find the value of x

step 2
Find the measure of the third arc
Let
z------> the measure of the third arc
we know that
-----> complete circle
substitute the values and solve for z


Answer:a
Step-by-step explanation: avnvgjv
A
Answer:
Step-by-step explanation:
the area is L x W so its 42cm
Answer:
2.2
Step-by-step explanation:
Find square root of sample size then divid it by your standard deviation