tan ( - pie / 12 ) =
- tan ( pie / 12 ) =
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Remainder formula :
tan^2 (x) = [ 1 - 2Cos(2x) ] ÷ [ 1 + 2Cos(2x) ]
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Thus :
tan^2 ( pie/12) =
[ 1 - Cos( 2pie/12 ) ] ÷ [ 1 + Cos( 2pie/12 ) ] =
[ 1 - Cos( pie/6 ) ] ÷ [ 1 + Cos( pie/6 ) ] =
[ 1 - √3/2 ] ÷ [ 1 + √3/2 ] =
[ 2 - √3 / 2 ] ÷ [ 2 + √3 / 2 ] =
[ 2 - √3 ] ÷ [ 2 + √3 ] =
2 - √3 / 2 + √3 =
(2 - √3)(2 - √3) / (2 + √3)(2 - √3) =
(2 - √3)^2 / 4 - 3 =
(2 - √3)^2 / 1 =
(2 - √3)^2
So :
tan^2 ( pie/12 ) = (2 - √3)^2
Take a square root from both sides
tan( pie/12 ) = 2 - √3
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Thus ;
- tan ( pie/12 ) = - ( 2 - √3 )
- tan ( pie/12 ) = - 2 + √3
Approximately :
- tan ( pie/12 ) = - 2 + 1.732
- tan ( pie/12 ) = - 0.268
3x+12=6 will give you x=2
And
-2=4-3x will give you x=-2
Answer:
The correction option is B.
Step-by-step explanation:
- Asking for typical no. of payments towards paying single payment loan
- Since single payment loan should be paid in one shot
- Therefore correct option is B i.e. one.
Graph C depicts the relation between No. of sweaters ( Nombre de chandails vendus ) and the fund raised in the campaign (Campagne de financements )
<h3>What is a Graph ?</h3>
Graph is the statistical representation of data , It helps to observe large data systematically.
It is given that
Sale of one sweater gives $3
The relation between the amount raised for funding , M and the number of shirts sold , n is given by
M = 3n
It has to be found that which graph exactly depicts the relation and the condition as given
Graph C depicts the relation given as , The graph is between No. of sweaters ( Nombre de chandails vendus ) and the fund raised in the campaign (Campagne de financements ) , and for every 100 sweater , $300 is earned .
Therefore Graph C is the answer.
To know more about Graph
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