Basically fibonachi is the 1st term+term before first term=2nd term 3rd term=1st term+2nd term 4th term=2nd term+3rd term etc
starting with t1=0 and t2=1 0,1 add them to get next 0+1=1 now we have 0,1,1 1+1=2 now we have 0,1,1,2 1+2=3 now we have 0,1,1,2,3 2+3=5 now we have 0,1,1,2,3,5 3+5=8 now we have 0,1,1,2,3,5,8 5+8=13 now we have 0,1,1,2,3,5,8,13 8+13=21 now we have 0,1,1,2,3,5,8,13,21
It's a complementary angle, so just solve for x and subtract the CBD from 90, First, we have to solve for x. 2x + 14 + x + 7 = 90 Combine like terms 3x + 21 = 90 Balance, subtract 21 from each side. 3x = 69 Divide 3 from each side x = 23. So know that we know x is 23, we can go about it 2 ways, subtracting the other angle with 90 or just substituting the variable, I'd just substitute the variable for it so just do 23 + 7. That equals 30, angle ABC = 30.
