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# maths C3 solomon paper question help watch

1. would someone be able to help me with question 7 a (ii)
http://pmt.physicsandmathstutor.com/...%20Edexcel.pdf
thanks
2. (Original post by Applejuice99)
would someone be able to help me with question 7 a (ii)
http://pmt.physicsandmathstutor.com/...%20Edexcel.pdf
thanks
i) Sin(x+30) + sin(x-30) = 2sinxcos30 = rt3 sin x

ii) Let x = 45

Sin75 + sin15 = sin (45 + 30) + sin(45 - 30)
= root 3 sin45
= 0.5 root6
3. (Original post by LeapingLucy)
i) Sin(x+30) + sin(x-30) = 2sinxcos30 = rt3 sin x

ii) Let x = 45

Sin75 + sin15 = sin (45 + 30) + sin(45 - 30)
= root 3 sin45
= 0.5 root6
thankyou for the help

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