Answer:
Step-by-step explanation:
You use the Law of Cosines when you know all three sides and want to find the angles of a triangle.
For example, if you want to find ∠A, you use the formula
1. ∠ A
2. ∠B
3. ∠C
Answer:
5 Miles
Step-by-step explanation:
Given, Height of the tower is 3 miles and the distance from the base is 4 miles.
According the Pythagoras Theorem, the square of the length of the hypotenuse is equal to the sum of squares of the lengths of other two sides of the right-angled triangle.
So, putting the data in Pythagoras theorem, let's consider A= 3 and B= 4.
So C will be,
sqrt(A^2 + B^2 )= C
Or, sqrt( 3^2+ 4^2)= C
Or, sqrt( 9+ 16) = C
Or, sqrt(25) = C
Hence, C = 5
So, The distance would be 5 Miles.
Answer:
<u>Yes</u>
- (2 · x) + (2 · 7) = 36
- x + 7 = 18
- 2x + 14 = 36
<u>No</u>
- 2x + 7 = 36
- 2(x + 7) = 72
- x + 14 = 36
Step-by-step explanation:
It is appropriate to eliminate parentheses as a first step. This can be done using the distributive property, resulting in either of ...
- 2x +2·7 = 36
- 2x +14 = 36 . . . . . 2·7 evaluated mentally
or by dividing the equation by the factor outside parentheses, resulting in ...
___
Any of the equations other than these represent violations of the equal sign. Something has been done to one side of the equation without the same thing being done to the other side.