Answer the fist question shown asap

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180

Describe the end behavior of the function below. f(x)=(2/3)^x-2 a. as x increases, f(x) approaches infinity. b. as x decreases, f(x) approaches 2. c. as x increases, f(x) approaches -2. d. as x decreases, f(x) approaches negative infinity.

The product of sin 30 degrees and sin 60 degrees is same as the product of