Answer:
a+51=90
a+51+90=180
39
Step-by-step explanation:
hope this helped :)
y-values of sampled wave:
0, 5, 5, -3, -5, -3, 2, 0, 0, -1, -2, 1, 1, -1, -1, -2, 2, 3, -1
My teacher told me to put a dot on very cross or intersection that the line is on.
4. 9
5. 4
6. 35