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Maths help

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MissDE:
Maths
June 2005
Paper 4
Question 2/c

I don't understand at all!
how do they use the tan rule, it's not a triangle !!
and where did the 1.5 come from..?


need help guyz..

MissDE:
 ???

Q80BOY:
just draw the trapezium

the base = 12 cm

the upper part = 9 cm
(the middle should be at 4.5)

and the height is 7 cm

7RAR7:
whats the tan rule

Q80BOY:

--- Quote from: 7RAR7 on May 16, 2009, 09:15:06 am ---whats the tan rule


--- End quote ---

is there a tan rule? i only know the sine and cosine rules

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