IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => GCE AS & A2 Level => Math => Topic started by: halosh92 on January 21, 2010, 10:22:28 pm

Title: maths c2 doubt
Post by: halosh92 on January 21, 2010, 10:22:28 pm

hello heres my doubt

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

Title: Re: maths c2 doubt
Post by: 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

Title: Re: maths c2 doubt
Post by: halosh92 on January 22, 2010, 09:26:37 am

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

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

Title: Re: maths c2 doubt
Post by: astarmathsandphysics on January 22, 2010, 09:34:47 am

I donload it but it is a blank sheet

Title: Re: maths c2 doubt
Post by: T.Q on January 22, 2010, 11:20:38 am

Quote from: halosh92 on January 22, 2010, 09:26:37 am

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

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