What is the scale factor of figure B to figure A

What should be done to solve the equation? x+14=21 add 14 to both sides of the equation. subtract 14 from the left side of the equation. add 14 to the left side and subtract 14 from the right side of the equation. subtract 14 from both sides of the equation.

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.

What expression is equivalent to (84+16)