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= r2 × 3.14 7x7 ↓ ↓ 49 × 3.14 = 153.86 → 153.9