Hello,
Let's assume a the hypotenuse
b/a=sin 30°==>b=a/2
c/a=cos 30°==>c=√3 / 2 *a
(√3/2 a, a/2,a) are the sides of the triangle.
Answer:for the first one, you should probably do a table of values then answer the question, i usually find that helpful
Step-by-step explanation:

That is the formula to find the slope. Hope it will help you.
Answer:
Hey
Step-by-step explanation:
Answer is b. 42
2(17+6)−4