Question

The value T 4 is a solution for the equation 3-3 seco +7 -1. O A. True оо B. False

Answer 1

start finding the value of sec(pi/4)

$\sec (\frac{\pi}{4})=\sqrt[]{2}$

then solve the left side of the equation

$\begin{gathered} 3\sqrt[]{2}\sec (\frac{\pi}{4})+7=1 \\ 3\cdot\sqrt[]{2}\cdot\sqrt[]{2}+7=1 \\ 3\cdot2+7=1 \\ 6+7=1 \\ 13\ne1 \end{gathered}$

It is not a solution to the equation.