Trig Grade 11 Functions Word Problem

Question

2 fire towers are located 100 km apart on nigh hills T and R. The bearing from T to R is northeast. A fire is observed from tower T at N10°E and from tower R at N75°W. The town of Pretty Valley is on a bearing of N25°E from T and S70°W from R. The observers report the wind is blowing fire directly towards Pretty Valley at 8km/h. How much time before the fire reaches Pretty Valley?

Answer 1

Depends on the wind............

Answer 2

Use the following URL to check your work.(and check for possible errors in the video).

desmos.com/calculator/grvkmv2yub