A boat starts at a point A. It travels a distance of 7 km on a bearing of 135° to point B. From B it travels 12 km on a bearing of 250° to point C. Using a scale of 1 cm:1 km, draw a diagram to show
these bearings and journeys.

c.using scale of 1 cm:1km draw a diagram

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,