I wish khan academy isn’t a thing
1 answer:
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Answer:
C.<em> BE:KA</em>
Step-by-step explanation:
The segments that have a ratio of lengths 1:2 are <em>BE</em> and <em>KA</em>.
A diameter is a straight line that touches 2 points on the circumference of a circle and touches the point at the center. <em>KA</em> is the diameter.
A radius is a straight line touches a point on the circumference of a circle and touches the point at the center. <em>BE</em> is the radius.
The radius of a circle is half the diameter.
If the radius is 1 cm, then the diameter is 2 cm.
Answer:
Part a) The length of the mat is
Part b) The area of the mat is
Step-by-step explanation:
step 1
Find the length
Let
L-----> the length of the rectangle
W---> the width of the rectangle
we know that
The perimeter of rectangle is
so
----> equation A
-----> equation B
substitute equation B in equation A
solve for W
Find the value of L
step 2
Find the area
The area of rectangle is equal to
substitute the values
For the given triangle, the cosine of angle A equals .
Step-by-step explanation:
Step 1; In the given triangle, the opposite side has a length of 9 units, the adjacent side has a length of 3√3 units while the hypotenuse of the triangle measures 6√3 units. To calculate the cosine of angle A we divide the adjacent side by the hypotenuse side.
cos A = .
Step 2; Length of the adjacent side = 3√3 units.
Length of the hypotenuse side = 6√3 units.
cos A = 3√3 / 6√3
cos A = .
To check we also have A = 60° and cos 60° = .