Question

What is the value of a?

Answer 1

Question, please? :)

Answer 2

picture

Answer 3

thats the question

Answer 4

woah... ok hold on

Answer 5

so... if you look closely, 2*100 will be equal to 99 + a

Answer 6

because according to definition, the measure of an interior angle is one half of the measure of the intercepted arc.

Answer 7

so what do i do ?

Answer 8

360 = a + 99 + 200
find a =?

how did we know about the 200 ? refer to the Inscribed angles theorme here
http://www.mathsisfun.com/geometry/circle-theorems.html

Answer 9

how do i find a ?

Answer 10

first, you have to solve for c, if
c + 96 = 180
what is c ?

Answer 11

84 ?

Answer 12

yes, that's correct c = 84
now to finding of a, take an equation :
a = 2 * c
just plug in c, right ?

Answer 13

just remmber that the central angle is double of inscribed angle

Answer 14

so 84 x 84 ?

Answer 15

or 84 x 2 ?

Answer 16

doubled means times 2, not square

Answer 17

168

Answer 18

yuup, correct. a = 168

Answer 19

but thats not on my answer choices

Answer 20

this are my answer choices :

A.) 101
B.) 96
C.) 192
D.) 200

Answer 21

@RadEn ?

Answer 22

ah, sorry i was mistake in using the figure,,, well this is my last opini