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Trigonometry Problem

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EMO123:
vin it's incorrect but well tried

11.(a)

f(x)=2
:. 4-3sin x=2
   3sin x= 2
   sin x=2/3

therefore x=sin-12/3   (keep your calculator in radians mode)
             x=0.729
 :)

ashwinkandel:
thanks EMO123 , but can you do remaining part of number 11 plz.

Vin:

--- Quote from: EMO123 on April 27, 2011, 05:16:39 pm ---vin it's incorrect but well tried

11.(a)

f(x)=2
:. 4-3sin x=2
   3sin x= 2
   sin x=2/3

therefore x=sin-12/3   (keep your calculator in radians mode)
             x=0.729
 :)


--- End quote ---

How come?

EMO123:

--- Quote from: Vin on April 27, 2011, 07:46:51 pm ---How come?

--- End quote ---
this is the paper of cie as levels Paper 12 chek it vin

but still
11 (a)

as given in question f(x)=2 and the Funtion is f:-->4-3sin x(can also be written as f(x)=4-3sin x you must be knowing this but still)
so therefore substitute and get you answers

EMO123:
11(b)
sketch the graph
by y=f(x)
so f(x)= 0, 1/2pie, pie, 3/2pie, 2pie
and find y and sketch the graph

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