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maths c2 doubt

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halosh92:
hello heres my doubt

maths GCE Edexcel soloman C2 paper "K"
q 5a

T.Q:
a) sinQPR=2/3  AND sin=opp/hyp  and cos=adj/hyp
adj=5^0.5 so cos=5^o.5/3

b) use cosine rule

c) use sine rule

halosh92:

--- Quote from: T.Q on January 21, 2010, 11:30:08 pm ---a) sinQPR=2/3  AND sin=opp/hyp  and cos=adj/hyp
adj=5^0.5 so cos=5^o.5/3

b) use cosine rule

c) use sine rule

--- End quote ---

 how did u get the adjacent as =5^0.5 ????

astarmathsandphysics:
I donload it but it is a blank sheet

T.Q:

--- Quote from: halosh92 on January 22, 2010, 09:26:37 am --- how did u get the adjacent as =5^0.5 ????

--- End quote ---

draw a right angel triangle then use pythagoras theorem to find the adjacent

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