Assume that,
The two angles of one triangle are congruent to two angles of a second triangle.
To prove: The third angles of the triangles are congruent.
Since, two angles of one triangle are congruent to two angles of a second triangle.
Therefore,
Adding these two we get,
Cancelling 180 on both sides, we get
Hence, if two angles of one triangle are congruent to two angles of a second triangle, the the third angles of the triangles are congruent.
ANSWER
EXPLANATION
The given angle is 870°.
870°-360°-360°=150°
This means that:
870° is coterminal with 150°, hence its terminal side is in the second quadrant.
It makes an acute angle of 30° with the x-axis.
Note that cotangent is negative in the second quadrant,
Hence,
The first option is correct.
11w(w-22) Multiply 11w times each term in the parenthesis
1.05,
look at the numbers on the right side of the decimal point. The lowest number will be your answer
