4: The sine of an angle is the length of the side opposite the angle to the length of the hypotenuse.
5: You will need to divide to see which ratio of sides is equal to 0.96.
7: Do sin-1 on each side of the equation.
14: Start by writing a tangent equation and doing tan-1 on each side.
26: The output of an inverse trig function is an angle.
29: Sketch the line and draw a right triangle (of any size) using the x-axis as the bottom.
30: The sin function finds a ratio based on an angle, and the sin-1 function finds an angle based on a ratio.
31: This would be finding the angle for which the opposite side is 1.2 times as long as the hypotenuse.
34: Multiply each side by 18.