The cosine ratio is adjacent leg divided by the hypotenuse.
The hypotenuse in a right triangle is the longest side and it is opposite the right angle.
An adjacent leg is the side that has an endpoint that is at the vertex of the angle and the other endpoint is at the vertex of the right angle.
cos A =
![\frac{12}{20} = \frac{3*4}{5*4} = \frac{3}{5}](https://tex.z-dn.net/?f=%20%5Cfrac%7B12%7D%7B20%7D%20%3D%20%20%5Cfrac%7B3%2A4%7D%7B5%2A4%7D%20%3D%20%5Cfrac%7B3%7D%7B5%7D%20)
ANSWER:
An expression is like an equation, but without an equal sign.
Therefore, you could say...
14 stones + 6 stones
or just...
14 + 6
10² - 2 (8) + 11 . Use PEMDAS, which is the order of operation to follow:
P = parenthesis → 10² - 2x8 +11
E = exponent → 100 - 2x8 +11
M = Multiplication → 100 -16 +11
D = Division → NO DIVISION
A = Addition → 111 -16
S = Subtraction → 95 (answer 3)
Apply the same logic for the 2nd exercice and you will find 26 (I don't see the 26 in your answer but I am sure it's 26)
The decimal is irrational because it is not repeating.
Answer:
-5x-1
Step-by-step explanation: