65 points - i have class in 1hr and i still can't figure this pls give full explanation and correct answer or else you'll be reported for "point greediness" thx ya'll

ab is tangent to the circle k(o) at b, and adis a secant, which goes through o. point o is between a and d∈k(o). find m∠bad and m∠adb, if measure of arc bd is 110°20'.

Sounds like the situation in the sketch below...

There is a theorem that says the angle (BAD) formed by a tangent (AB) and a secant (AD) to a circle (O) is half the difference of the intercepted arcs (BD and BD'):

Triangle BAD is a right triangle, so

answer: 4  

the square root of 16 is 4. it is a very simple mathematic concept. a square root when a number multiplied by itself will result in a number. here, the number 16 comes when 4 is multiplied by 4. hence the square root of 16 is 4. you can always figure out a square root by the inverse operation of squaring.