The angles have the same measure. In the reflection the order of the angles are changed from clockwise to counterclockwise.
1/3 rotation counterclockwise
angles and saxons
Because the cosine of some angles is positive and the cosine of some other angles is negative.
You get a positive answer when multiplying two alike signs because since its an even number of positive signs, the number will be positive. For example, -2 x -4= 8 since there are an even amount of negative signs.
counterclockwise
The angles have the same measure. In the reflection the order of the angles are changed from clockwise to counterclockwise.
1/3 rotation counterclockwise
Positive rotations typically go counterclockwise.
a(-)and a(-)=positive a(+)and a(+)=positive but a(-)and a(+) or a(+)and a(-)= negative so two signs the same is positive and two signs that are different are negative.
angles and saxons
It is because angles are measured counter-clockwise for the horizontal x-axis.
Because the cosine of some angles is positive and the cosine of some other angles is negative.
You get a positive answer when multiplying two alike signs because since its an even number of positive signs, the number will be positive. For example, -2 x -4= 8 since there are an even amount of negative signs.
Acute angles are usually measured this way. It is nothing more than a convention.
The answer is always positive. If the signs are the same (positive by positive, negative by negative), then the quotient is always positive. If the signs are different (positive by negative, negative by positive), then the quotient is always negative.
positive and negative angles of 87 degrees