I need help. Please. Someone?

Question

Math homework

ok.

How would I work this out.

"Bob is lying on the ground looks up at an angle of 60 degrees and sees a plane flying 450m above the ground. Then he sees the same plane while looking up at a 20 degree angle, still 450m above the ground. How far had the plane travelled?"

How can I work this out using trigenometory, sin cos and tan?

Answer 1

Draw a diagram. Label all the known sides and angles. Calculate.

(This is the Languages category, BTW)

Answer 2

so sorry i tried but .... i can,t get it

Answer 3

Draw the picture. It makes a triangle. Then label the sides. Once you do it youll know where to go. Its like 5:00am so  I dont think I can be of anymore help. Sorry!

Answer 4

trigonometory.....

a/sin A = b/sin B