Answer:
Step-by-step explanation:
You can understand the statement from many perspectives, but in terms of proposition logic it is best to understand it as "negation of a" or " b" in mathematical terms is written like this
You can show that they are logically equivalent because they have the same truth table.
Answer:
You can use equation or use a calculator.
Step-by-step explanation:
Angles on a straight line add up to 180°, so:
x + 60 = 180
x = 180 - 60
x = 120°
Answer:
Hey there!
There is this equation, which states that the angle created by an inscribed angle is half the measure of the arc.
Thus, we can write: 60=5x-5
65=5x
x=13
Let me know if this helps :)
This follows from the half-angle identity for cosine.
