Adding, Subtracting, Multiplying, and Dividing Rationals and Solving Equations with Rationals in a real world scenario?
1 answer:
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Answer:
The value of DC is 66.34.
Step-by-step explanation:
The triangles ABC and DCA are right angled triangles.
The straight line AC is a bisector for angles C and A.
The measure of ∠C is 30°.
Then the measure of angles BCA and ACD will be 15° each.
The measure of angle DAB is 150°.
Then the measure of angles DAC and BAC will be 75° each.
Now consider the right angled triangle ABC.
The measure of side AC is:
Consider the right angled triangle DCA.
The angle DAC measure 75°.
Using the trigonometric identities compute the value of Perpendicular DC as follows:
Thus, the value of DC is 66.34.
Answer:
Among the five statements,statement 1 and 4 are true for the circle shown.
Step-by-step explanation:
Given:
An image is attached here.
A circle with radius = 15.4 m
We ave to find the diameter,circumference and relationship between the two.
Formula to be used:
⇒ Diameter of a circle = 2r
⇒ Circumference = 2πr
Lets find the values.
- Diameter =
m
- Circumference =
m
- Relationship =
We can say that a little more than 3 diameters could be wrapped around the circle.
From the drop down our choices are.
- The diameter of the circle is 30.8 m.
- The approximate circumference of the circle ,rounded to the nearest tenth is 96.7 m.
Option 1 and 4 are the right choices.
