Using matlab, determine the internal loadings of point c as function of weight w. weight ranges from 20 lbs to 160 lbs in increments of 20 lbs. plot shear force v as a function of distributed load. plot normal force as a function of distributed load. plot moment at c as a function of distributed load.

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality