PLEASE HELP MEEE♥️♥️♥️♥️♥️

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

Asap describe the transformations required to obtain the graph of the function f(x) from the graph of the function g(x). f(x)=-5.8sin x. g(x)=sin x. a: vertical stretch by a factor of 5.8, reflection across y-axis. b: vertical stretch by a factor of 5.8,reflection across x-axis. c: horizontal stretch by a factor of 5.8, reflection across x-axis. d: horizontal stretch by a factor of 5.8 reflection across y-axis.

With number 11 ( show how you got the answer)