What is the measure of zabc given that ab and bc are tangent to o0?

answer:

a

step-by-step explanation:

since abc is an acute angle and all the other options are obtuse

answer:

a

step-by-step explanation:

∠ abc is a tangent- tangent angle and is measured as half the difference of the intercepted arcs, that is

∠ abc = 0.5( arc adc - arc ac ) = 0.5(228 - 132)° = 0.5 × 96 = 48°

the answer is: d) o, f, and kr.

atomic radius of bromine (br) is 114 pm.

atomic radius of oxygen (o) is 73 pm.

atomic radius of fluorine (f) is 72 pm.

atomic radius of krypron (kr) is 112 pm.

the atomic radius of a chemical element is a measure of the size of its atom.

the atomic radius varies with increasing atomic number, but usually increases because of increasing of number of electrons.

the atomic radius decreases across the periods because an increasing number of protons, because greater attraction between the protons and electrons.

180-142=38 for the acute angle next to the entry

90+38=128

180-128=52

a=52

step-by-step explanation: