Cosine = adjacent / hypotenuse
cos (49)= x/27
27 * cos(49) = x
27 * 0.656 = x
x = 17.7
Answer: Vertex (-3, 1) and x-intercept (-4, 0), (-2, 0)
Step-by-step explanation:
4x^2-6x-40
2(2x^2-3x-20)
=2(2x+5)(x-4)
Answer:
19-13=6 there it is
Step-by-step explanation:
Answer:
Because the sin function is positive in the first and second quadrants.
Step-by-step explanation:
We are told that sin(A) = 0.422
Thus;
A = sin^(-1) 0.422
A = 25°
Now,this is just for the first quadrant because this angle could very well be in another quadrant.
Usually in four quadrants of an x-y coordinate, the sin function is negative in the third and fourth quadrants because the x- values there are negative and sin is opposite/hypotenuse. That will lead to a negative value of Sin A since hypotenuse is always positive while the x-values in these quadrants are negative.
So, sin function is positive in the first and second quadrant.
In the first quadrant, it's 25°, however in the second quadrant where it is below the x-axis, the angle will now be: 180° - 25° = 155°
