Atriangular entranceway has walls with corner angles of 50°, 70°, 60°. the designer wants to place a tall bronze sculpture on a round pedestal in a central location equidistant from the three walls. how can the designer find where to place thr sculpture?

Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b