What is the solution to the equation 2 (4 minus 3 x) + 5 (2 x minus 3) = 20 minus 5 x?
2 answers:
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The vertex is in essence the turning point of the parabola y = x²<span> − 10x + 2
the x coordinate of the turning point = </span>
=
= 5
when x = 5, y = (5)² - 10(5) + 2
= -23
Thus coordinate or vertex is ( 5, -23)
the x coordinate of the turning point = </span>
=
= 5
when x = 5, y = (5)² - 10(5) + 2
= -23
Thus coordinate or vertex is ( 5, -23)
Every point in the unit circle is identified either by its coordinates or by the angle it forms with the x-axis,
.
The trigonometric functions associate with every angle and the correspondant
coordinates the two values
This procedure can be done for every angle , so you don't have to work with acute angles only.