masonvinyard02p83vua
24.09.2019 •
Mathematics
If in a triangle abc, a-25, b=16, c=9 then tan(a/2) is?
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Ответ:
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)
Ответ:
And in point slope it should be y-7=10(x+5)
Hope this helps!