Graham spent $45 at post office he brought a special circumstance for $16 with the remaining money owed watch and stamps at $1 50 each and some stamps at $0.70 each how many $0.70 stamps did Graham buy​

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

Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 5 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd?

Angle that produces maximum distance