Is there a way you can make the 280 into 420?

Which of these choices show a pair of equivalent expressions?

You are making a blueprint of your bedroom and you plan to use a scale factor of 18 . the actual width of your room is 14 feet and the actual length of your room is 16 feet. determine the width and length of your room on the blueprint. on the blueprint, your room will have a width of feet and a length of feet.

If the value of cos330°is√3/2 then find cos 165°.