-x+3y=6 x+3y =18 elimination
1 answer:
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The equation of a circle is:
(x - h)² + (y - k)² = r²
The equation of a parabola is:
(x - h)² = 4p(y - k)
The equation of an ellipse is:
where variables a and b and the two different measurements of the vertices
The equation of a hyperbola is:
if it is with a horizontal transverse axis
if it is with a vertical transverse axis
Notice these have a subtraction operation, the exact opposite ellipse.
(x - h)² + (y - k)² = r²
The equation of a parabola is:
(x - h)² = 4p(y - k)
The equation of an ellipse is:
where variables a and b and the two different measurements of the vertices
The equation of a hyperbola is:
Notice these have a subtraction operation, the exact opposite ellipse.
Answer:
63°
Step-by-step explanation:
To get the value of x we will use the Pythagoras theorem
hyp² = opp²+adj²
Given
hyp is the length of the ladder = 22ft
Adjacent is the distance from the base of the ladder to the wall = 10ft
Angle of elevation = x
Using the SOH CAH TOA identity
Cos theta = adjacent/hypotenuse
Cos x = 10/22
Cos x = 5/11
x = arccos(5/11)
x = arccos(0.4545)
x = 62.96°
Hence the best estimate of x is 63°
