Answer:
It the follows the theorem that the sum of the lengths of two sides of a triangle must be greater than the third side.
Answer:
120° & 240° (given the angles are between 0° and 360°)
Step-by-step explanation:
We want to find .
This means we want to know the angle(s) for which cosine has a value of .
The basic acute angle that has a cosine of is 60°. But we want to know NEGATIVE . So in which quadrants is cosine negative? Second and Third
- The rule to find 2nd quadrant angle with known acute angle is: 180 - α
- The rule to find 3rd quadrant angle with known acute angle is: 180 + α
Where α is the basic acute angle (in our case it is 60°)
So 2nd quadrant angle is 180 - 60 = 120°
and 3rd quadrant angle is 180 + 60 = 240°
One of the reasons could be , because he was covering up the negative results and showing only the positive side of it .
Answer:
SAS, SSS, AAA
Step-by-step explanation:
Because Im bored X D