I don't know how to do the questions below↓ Can anyone help me to solve this question? Thanks.

Attachment 24552

Please help, thx.

Printable View

- Aug 19th 2012, 08:18 PMwilliam24Trigonometric ratio problem
I don't know how to do the questions below↓ Can anyone help me to solve this question? Thanks.

Attachment 24552

Please help, thx. - Aug 19th 2012, 08:27 PMpickslidesRe: Trigonometric ratio problem
In the first part

Therefore the distance

Speed = Distance Time = metres per second - Aug 19th 2012, 08:41 PMwilliam24Re: Trigonometric ratio problem
Thx a lot.

- Aug 19th 2012, 11:13 PMearbothRe: Trigonometric ratio problem
- Aug 20th 2012, 02:48 AMwilliam24Re: Trigonometric ratio problem
so what is the correct answer?? Plz help.

- Aug 20th 2012, 03:05 AMearbothRe: Trigonometric ratio problem
- Aug 20th 2012, 03:12 AMwilliam24Re: Trigonometric ratio problem
I wanna know the steps and how the steps made, My maths is really poor :(

Thx for ur helping, earboth :) - Aug 20th 2012, 08:26 AMtomasklosRe: Trigonometric ratio problem
The steps are the following. You need to find Dickie's walking speed.

.

You know "time travelled", so you only need to find "distance travelled."

You can apply Pythagoras' theorem to find the distance from D to A if you know AB and BD.

AB is given (350 meters), and BD = CD + 300 meters, so you need to find CD, which you can derive from the fact that CE as well as the angle at D are given:

,

so , and .

Now ,

so the speed is meters per minute. (Convert to whatever unit required.)

Try to understand the steps above, and then solve problem (b) on your own. - Aug 20th 2012, 06:41 PMwilliam24Re: Trigonometric ratio problem
Thx. It's clear

- Aug 21st 2012, 04:32 AMtomasklosRe: Trigonometric ratio problem