qffdhruba was last seen: Viewing member profile minie23, 32 minutes ago
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qffdhruba
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http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_s12_qp_43.pdf
Please explain me no. 7(iii) (iv)
4 ÷ sin(90 + φ) = 10 ÷ sin(150– φ) equation 1
tanφ = 4 ÷ √3 equation 2
can you tell me how equation 1 is solved to get equation 2
Is this equation correct ?
Workdone by driving force = KE + PE + Workdone against resistance -
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