Express In in terms of In 10 and In 3 10​

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

This is so hard and it’s for a test

Television sizes are based on the length of the diagonal of the television's rectangular screen. so, for example, a 70-inch television is a television having a diagonal screen length of 70 inches. if a 70 inch television's diagonal forms a 29°angle with the base of the screen, what is the vertical height (1) of the screen to the nearest inch? 70 inhin