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What angles are in the letter R
In these types of questions, you have to try to isolate the unknown variable.14 = 2 + r - 21.Remember whenever you move ANYTHING over the equals sign, you have to make its sign opposite. Since the r is positive, and we are moving it over the equals sign we have to make it a negative sign. When we move the 14 over, it is currently positive so we make it into a negative.-r = -14 + 2 - 21-r = -12 - 21-r = -43(Eliminate the negative sign)r = 43.
There is no specific sign. The set of irrationals can be written as R - Q.
s=r x theta s=arc length r=radius theta=angle
A regular polygon