Simplify the expression. (x^2 - 9)/(x^2 + 2x - 15)
1 answer:
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Answer:
Step-by-step explanation:
Volume of a cone=1540, Radius=7cm.
The height of a cone=h
When we need to find the height of a cone, we can use the formula of the volume of a cone, which is to find the height of a cone.
Put the pi value=22/7 and the value of radius which is 7 cm into the formula.
Move to another side. 1540 divided by
to calculate what is the value of h, h is the height of a cone. Like this.
Rearrange the h.
I hope you will understand my solution and explanation. If you still cannot get the point, you can ask me anytime! Thank you!
Given:
To find:
The obtuse angle between the given pair of straight lines.
Solution:
The slope intercept form of a line is
...(i)
where, m is slope and b is y-intercept.
The given equations are
On comparing these equations with (i), we get
Angle between two lines whose slopes are is
Putting and
, we get
Now,
and
and
and
, so it is an obtuse angle and
, so it is an acute angle.
Therefore, the obtuse angle between the given pair of straight lines is 120°.