Triangle A B C is shown. Angle B A C is 66 degrees and angle A C B is 38 degrees. The length of A B is 3. Law of sines: StartFraction sine (uppercase A) Over a EndFraction = StartFraction sine (uppercase B) Over b EndFraction = StartFraction sine (uppercase C) Over c EndFraction Which expression represents the approximate length of Line segment B C? StartFraction (3) sine (66 degrees) Over sine (38 degrees) EndFraction StartFraction sine (66 degrees) Over (3) sine (38 degrees) EndFraction StartFraction (3) sine (38 degrees) Over sine (66 degrees) EndFraction StartFraction sine (38 degrees) Over (3) sine (66 degrees) EndFraction

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.

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4

the diver is 33 feet below the surface.

step-by-step explanation:

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