determine the length MN to the nearest tenth of a centimetre

Question

anonymous · Answer

|dw:1379212109403:dw| can someone help me please

anonymous · Answer

Do you know the law of Cosine of law of sines yet?

campbell_st · Answer

ok... to solve this question there are several steps

find the angle N using the sine rule... 

when you have that, find the angle K using angle sum of a triangle. 

Lastly to find NM you need to use the cosine rule.. 

the cosine rule needs the included angle..... or the angle between the 2 sides with measurements. Thats why you can't use the cosine rule from the start

campbell_st · Answer

sine rule and cosine rule are the same as law of sines and law of cosines

anonymous · Answer

Thank u so much, i think i know how to do it now