Answer:
(B)
Step-by-step explanation:
Given: It is given that arc AD=130° and arc AB=arc CD=80°.
To find: The measure of ∠APD.
Solution: It is given that arc AD=130°⇒m∠AOD=130° (The measure of the central angel is equal to the intercepted arc)
Also, arc AB=arc CD=80°⇒m∠AOB=m∠DOC=80° (The measure of the central angel is equal to the intercepted arc)
We know that the sum of the central angles is equal to 360°, thus
m∠AOD+m∠AOB+m∠BOC+m∠COD=360°
⇒130°+80°+m∠BOC+80°=360°
⇒290°+m∠BOC=360°
⇒m∠BOC=360°-290°
⇒m∠BOC=70°
Now, since (The measure of the central angel is equal to the intercepted arc), therefore arcBC=70°.
Also, we know that Angle Formed by Two Secants is half of the DIFFERENCE of Intercepted Arcs, therefore
Substituting the values, we get
⇒
⇒
Thus, the measure of ∠APD is 30°.
Hence, option B is correct.
Answer:
the answer is 25
Step-by-step explanation:
1/2(130-80)
Here,
(s-3)²=0
→s-3=0
→s=3
Substituting s=3 in,
(s+3)(s+5)
=(3+3)(3+5)
=(6)(8)
=48
Answer:
The distance between both stadiums is:
2215.49 m - 461.46 m =1754.03 m
Step-by-step explanation:
Look at the attached picture:
Lets say that the stadium on the left is stadium 1 and stadium 2 is on the right.
Using the angle property of alternate angles the angle above stadium 1 is 72.9° and the angle above the stadium 2 is 34.1°
By using trigonometric function of tangent we solve it as:
We know that tanθ = opposite / adjacent
Therefore,
tan 72.9°=1500/ adjacent
Now
adjacent = 1500/tan 72.9°
adjacent = 461.46 m
Solve for next angle:
Tan 34.1°=1500/ adjacent
adjacent = 1500/tan 34.1°
adjacent = 2215.49 m
Therefore the distance between both stadiums is:
2215.49 m - 461.46 m =1754.03 m ....