Ask your own question, for FREE!
Mathematics 10 Online
NvidiaIntely (nvidiaintely):

@kevin

NvidiaIntely (nvidiaintely):

OpenStudy (kevin):

cos a = (b^2 + c^2 - a^2) /(2*b*c) cos a = (28^2 + 15^2 - 34^2)/(2*28*15) cos a = -0.175 a = 100 degree

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!