Question

Can you help me with these questions? Picture shows the questions but, I'll type them as well.
1a : find the length of AK and BK
1b : if AC= 7, then how long is BC?
2a : find the measure of angle AKB?
2b : what about angle ADB?
2c : what's the measure of angle ACB?
3a : find the arc length of arc AB?
3b : Find the area of sector AB?

Answer 1

I'm sr :( I forgot how to find this :(

Answer 2

Aw, It's ok. @Leong

Answer 3

useful information
CK is the bisector
cbk = cak
arc AB = angle AKB given
circle = 360 degrees
Cbk = cak = 90 degrees tangent with radius

arc length is proportional angle formed
angle/360 = length/circumference circumference = 2*pi*radius

area of sector to area of circle in same ratio as angle of sector
area of sector = angle/360 * area of circle (pi*r^2)

Answer 4

Thank you. @triciaal

Answer 5

you are welcome

Answer 6

angle you are talking about above the 360 is central angle right? @triciaal

Answer 7

so it would be central angle/360 for both arc length and sector? @peachpi

Answer 8

Do use the give arc AB = 100 to find the central angle? @tricicaal