Qualification > Math

nov09 math p12( AS CIE)

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sweetie:
can any1 show me how to work out Q10.c??????????

astarmathsandphysics:
gradient of tangent is(1+3 sqrt(17))/2
gradient of AB=1/2

tan^(-1)((1+3 sqrt(17))/2) -tan^(-1)(1/2)

sweetie:
cud u plz xplain it in more details??????

its urgent ... plzzzzzzzzzzzzzzz
i have my mock 2morrow :-\

astarmathsandphysics:
The angle between the x axis and a curve is arctan(gradient)

The difference between two arctan(gradients) is the angle between two curves

sweetie:
thank u sir :)

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