What are all the exact solutions of -3tan^2(x)+1=0? give your answer in radians.

This is a problem of quadratic equation, but first of all we need to name:



Then, the equation above:



Is converting into:



Then:



being a = -3, b = 0, c = 1, so there are two values of w:



Given that w = tan(x)



Finally:

A) for the n row: 22+(n-1)×6therefore,b) 100-22=78that means (n-1)×6=7878÷6=1313+1=1414th row has 100 seats