Which triangle is a 30°-60°-90° triangle?

right angle triangle

Step-by-step explanation:

because the number given below is less then 90°

The quadratic equation may be expressed in a form, ax² + bx + c =0. From the given equation, a = 2, b = 1, and c = -3. Substituting these value to the equation of the discriminant (D).

                                       D = b² - 4ac

                                   D = 1² - (4)(2)(-3) = 25

Thus, the discriminant of the equation of 25.

I am joyous to assist :)