camotank34 camotank34 16-12-2020 Mathematics contestada Need help fast. Pre Calc Let |a| = 12 at an angle of 25° and |b| = 7 at an angle of 105°. What is the magnitude of a + b? Round to the nearest decimal. A) 12.8 B) 14.9 C) 15.4 D) 17.3