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_GEN_GOTOBOTTOM Post Reply Favoured: 0
TOPIC: Re:triangles
#488
sujankumar (User)
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triangles 9 Month 18 Day 2 Hour 44 Min ago Karma: 0  
Prove that the triangle ABC is equilateral if
sin(A/2)+sin(B/2)+sin(C/2)=3/2
?
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#952
kshitizthegreat (User)
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Re:triangles 3 Month 9 Day 13 Hour 34 Min ago Karma: 0  
simple
since the triangle is equilateral ,we can assume a=b=c=60 degrees
so,sin(60/2)+sin(60/2)+sin(60/2)=1/2+1/2+1/2
hence answer would be 3/2.
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#991
alok2010 (User)
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Re:triangles 2 Month 21 Day 10 Hour 35 Min ago Karma: 0  
its not right answer. we have to solve it by using trigonometrical identities
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#992
alok2010 (User)
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Re:triangles 2 Month 21 Day 10 Hour 34 Min ago Karma: 0  
its not right answer. we have to solve it by using trigonometrical identities
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