maths c2 doubt

[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]

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

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

[astarmathsandphysics]

I donload it but it is a blank sheet

[T.Q]

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

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