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Find c.
Round to the nearest tenth.
20 ft
50°
15 ſt
c= [.? ]ft
Law of Cosines: c2 = 22 + b2 - 2ab cos C


Find C Round To The Nearest Tenth 20 Ft 50 15 St C Ft Law Of Cosines C2 22 B2 2ab Cos C class=

Sagot :

Answer:

: c2 = a2 + b2 - 2ab cos C

c²=20²+15²-2×15×20×cos50

c²=400+225-600×0.64

c²=241

c=√241=15.5ft