Resuelve las siguientes ecuaciones trigonométricas, hallando la primera respuesta con tu calculadora y si el ángulo es negativo hacer dar la vuelta con el circulo trigonométrico.

2senx − 1 = 0

secx = 4cosx

2cos2 − 5cosx + 2 = 0

sen2x + 3cos2x = 2

tan2x ∗ cosx + cos2x = 1

step-by-step explanation:

through just a quick inspection, one can see that the graph of this cubing function starts in quadrant iii and ends in quadrant i.   when x = 0, y = 3, so the y-intercept is (0, 3).

if graphs are part of the problem statement, share them.   .

step-by-step explanation:

3

step-by-step explanation:

because where the point where the 2 lines intersect is (3,-1) the x value is 3