How do you find #abs(1-7i )#? Precalculus Complex Numbers in Trigonometric Form Complex Number Plane 1 Answer José F. Apr 23, 2016 #sqrt(50)# Explanation: #|1-7i| =sqrt(1^2+7^2)=sqrt(1+49)=sqrt(50)# Answer link Related questions What is the complex number plane? Which vectors define the complex number plane? What is the modulus of a complex number? How do I graph the complex number #3+4i# in the complex plane? How do I graph the complex number #2-3i# in the complex plane? How do I graph the complex number #-4+2i# in the complex plane? How do I graph the number 3 in the complex number plane? How do I graph the number #4i# in the complex number plane? How do I use graphing in the complex plane to add #2+4i# and #5+3i#? How do I use graphing in the complex plane to subtract #3+4i# from #-2+2i#? See all questions in Complex Number Plane Impact of this question 1458 views around the world You can reuse this answer Creative Commons License