In △abc, a=26, b=19, and c=17.2. identify m∠c rounded to the nearest degree. the figure shows triangle a b c. the length of segment a b is c units. the length of segment a c is b units. the length of segment b c is a units.

41°

Step-by-step explanation:

∠C is opposite of side c.

Using law of cosines:

c² = a² + b² − 2ab cos C

17.2² = 26² + 19² − 2(26)(19) cos C

cos C = 0.750

C ≈ 41°

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m

the reason why your question keeps getting deleted because this is not a school related question : )

i will answer your question though.

i never tried church's