If a central intercepts an arc of 6.3 cm. in a circle whose radius is 4.2 cm., find the measure of the central in radians.

For f(x) = 3x+1 and g(x) = x2 - 6, find (g/f)(x)

Jorge wants to determine the enlarged dimensions of a digital photo to be used as wallpaper on his computer screen. the original photo was 800 pixels wide by 600 pixels high. the new photo will be 1,260 pixels wide. what will the new height be?

Use the given information to determine the exact trigonometric value.