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tan(30)=25/x

 Jun 14, 2017
 #1
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tan( 30º )  =  25 / x               Multiply both sides of the equation by  x  .

 

x tan( 30º )  =  25                 Divide both sides of the equation by tan( 30º )  .

 

x  =  25 / tan( 30º )               And   tan( 30º ) = √3 / 3

 

x  =  25 / ( √3 / 3 )

 

x  =  25 * 3 / √3

 

x  =  75 / √3                         Multiply numerator and denominator by  √3  .

 

x  =  75√3 / 3                       Reduce fraction by  3 .

 

x  =  25√3

 Jun 15, 2017

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