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junior college 1 | H2 Maths
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Need help with (b)
Date Posted: 4 months ago
Views: 102
tan α = dy/dt × dt/dx = (20 - 10t)/30 = (2 - t)/3
x = 10 -> t = 1/3 -> tan α = (2 - 1/3)/3 = 5/9 -> α = atan (5/9)
x = 10 -> t = 1/3 -> tan α = (2 - 1/3)/3 = 5/9 -> α = atan (5/9)
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