## anonymous 4 years ago Difficult Question. Look at Diagram

1. anonymous

|dw:1327459900782:dw|

2. anonymous

find h

3. anonymous

<A = 47 <B = 42 AB = 200m

4. Hero

Find angle B, apply law of cosines and law of sines

5. anonymous

6. anonymous

<B is already given . it is 42

7. Hero

I meant angle D

8. Mertsj

@Brent Are you sure that h bisects the base AB?

9. anonymous

Brent, AC and AB are not equal

10. anonymous

AC and CB *

11. anonymous

<D = 62 , what next ?

12. Hero

Apply law of sines

13. Mertsj

angle BDC= 48 degrees angle ADC = 43 degrees

14. Mertsj

15. Mertsj

$\frac{\sin 91}{200}=\frac{\sin47}{DB} DB = 146.3$

16. Mertsj

$\frac{\sin 48}{BC}=\frac{\sin90}{146.3} BC=111.0$

17. Mertsj

$\frac{\sin 42}{h}=\frac{\sin48}{111} h = 100.0$

18. anonymous

Im sorry i couldnt tell whether or not they were equal