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If s = 12 and A=90^(@) then find the va...

If s = 12 and `A=90^(@)` then find the value of `r_(1)`

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SRISIRI PUBLICATION-PROPERTIES OF TRIANGLES-LAQ ,SAQ,VSAQ (2DHARDQ) (3DMIS.Q)
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  4. In DeltaABC , " find " b cos ^(2).(C)/(2)+c cos^(2).(B)/(2)

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  7. In DeltaABC show that (b^(2)-c^(2))/(a^(2))=(sin(B-C))/(sin(B+C))

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  8. Show that a cosA+bcosB+c"cos"C=(2Delta)/(R)

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  9. Show that a^(2)sin2C+c^(2)sin2A=4Delta

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  10. In DeltaABC , prove that (1)/(r(1))+(1)/(r(2))+(1)/(r(3))=(1)/(r).

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  12. If A=90^(@), " show that " 2(r+R)=b+c

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  13. If s = 12 and A=90^(@) then find the value of r(1)

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  14. If a = 18 , b=24 , c=30 , find r(1) .

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  15. If a , b, c are in A .P ., then show that 3tan.(A)/(2)tan.(C)/(2)=1

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  16. If acos^(2).(C)/(2)+c"cos"^(2)(A)/(2)=(3b)/(2), then show that a, b , ...

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