C=40squared+35squared minus 2 times40 times 35cos(50)? the answer to this is then square rooted but i cant figure it out

Step-by-step explanation:

c² = 40² + 35² − 2(40)(35)cos(50)

c² = 1600 + 1225 − 2800 cos(50)

c² = 1025.195

c = 32.019

4.08%

step-by-step explanation:

it is contrapositive

i could not see the question too well so check yourself again too . this is because i want you to get it correct.