Help me pls will mark branliest

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

What are the steps to solving the inequality 3b + 8 ≥ 14?

Graph g(x)=2cosx . use 3.14 for π . use the sine tool to graph the function. graph the function by plotting two points. the first point must be on the midline and closest to the origin. the second point must be a maximum or minimum value on the graph closest to the first point.