Answer:
SOH-CAH-TOA

~~~~~~~~~~
H= 
O= 5
A= 9
~~~~~~~~~~~~~~~~
Sin = 
Cos= 
Tan = 
Step-by-step explanation:
Answer:
π(12.1)²
Step-by-step explanation:
12.1 is the radius
Formula for base = πr²
= π(12.1)²
The angle addition postulates states that if an angle UVW has a point S lying in its interior, then the sum of angle UVS and angle SVW must equal angle UVW, or ?UVS + ?SVW= ?UVW.