Answer:
Step-by-step explanation:
That is the Community Property of Multiplication.
Hope that helps :)
Answer:
9
Step-by-step explanation:
sqrt(5) + sqrt(405)
sqrt(5) + sqrt( 81*5)
sqrt(5) + sqrt(81) sqrt(5)
sqrt(5) +9 sqrt(5)
10 sqrt(5)
Answer:
Terminal side in 2nd Quadrant
Only sin(x) & cosec(x) are positive in 2nd Quadrant

Perpendicular=5
Base=√(13²-5²)=√(169-25)=√144=√12²=12
Hypotenuse=13

C is the hypotenuse (or AB if they write it that way). The hypotenuse is the longest side and is always across from the right angle in a right triangle.