How do you find #abs( -7-2i)#?
1 Answer
May 1, 2016
Explanation:
Given a complex number z = a + bi , then the modulus (or magnitude) is found using Pythagoras' theorem.
# |z|=|a+bi|=sqrt(a^2+b^2)# here a = -7 and b = -2
#rArr|-7-2i|=sqrt((-7)^2+(-2)^2)=sqrt53#
