ANY1 HELP ME PLEASE
The ratio of the radii of two circles at the centers of which two arcs of the same length subtended a angles of 60 degree and 70 degree is

Question

watchmath · Answer

arc 1 =$60/360\cdot 2\pi r_1$
arc 2 = $70/360\cdot  2\pi r_2$

Since arc 1=arc 2 if we divide the first by the second we have
$1=6/7\cdot r_1/r_2$
So $r_1/r_2=7/6$ where r1 is the outer radius and r2 is the inner radius

anonymous · Answer

YES BUT IT IS NOT THE OPTION SO I SHOULD THINK THAT THE QUESTION IS WRONG

watchmath · Answer

what are the options?

anonymous · Answer

A) 5:4
B) 4:5
C) 2:6
D) 4:3

myininaya · Answer

ok i don't mean to sound like a retard but can you tell me what subtended means

anonymous · Answer

extend opposite angle: to be opposite and delimit the extent of an angle or side of a geometric figure was not found in the English Dictionary 

.

anonymous · Answer

Subtended is a code word to let you know they are referring to a sector of a circle; they would usually say the subtended angle; referring to the sector bounded by radii, arc and subtended angle.