In this triangle, the product of tan a and tan c is

a. 1
b. 4.24
c. 17.98
d. insufficient data

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

Can someone me and do the problem plz so i can understand it more better

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