dreamhigh dreamhigh
  • 26-04-2017
  • Mathematics
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If in a triangle ABC, a-25, b=16, c=9 then tan(A/2) is?

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taskmasters
taskmasters taskmasters
  • 08-05-2017
We have the following givens:
a=25 
b=16
c=9
We can make use of the Laws of Cosines in solving the angle A such as:
cos A = (b²+c²-a²)/2bc
cos A =((16)²+9²-(25)²)/1*16*9
A=180°

tan (A/2)=tan(180/2)  
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