Consider the Triangle ABC below Which expressions represent the length of side BC

Choose 2 answers

A : 6 * (Sin 55)

B : 6 * (Sin 35)

C : 6 * (Cos 55)

D : 6 * (Cos 35)

B:  6 * (Sin 35), C:  6 * (Cos 55)

Step-by-step explanation:

First, it would be helpful to know where the 35 comes from.

This is the measure of angle A, which can be found using the equation 180 - (90 + 55) = 35.

The Sine ratio is opposite / hypotenuse, and the Cosine ratio is adjacent / hypotenuse.

For answer B, we first have Sin (35) = x / 6

Solving for x would require us to use 6 * (Sin 35).

For answer C, we first have Cos (55) = x / 6

Solving for x would require us to use 6 * Cos (55).

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