11. From the figure find the value of PQ.
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ANSWER
(√3-1/√3) h
EXPLANATION
USE TRIGNOMETRY
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By the trignometric applications __,
In ∆AQB ,
tan60° = h / d
√ 3 = h / d
d = h / √3 ______( 1 )
In ∆ APB ,
tan30° = h / d + PQ
1 / √3 = h / d + PQ
√3 h = d + PQ _____( 2 )
Now put 1 into 2 , we get ,
d = - PQ
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