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if the lengths of sides of a triangle be...

if the lengths of sides of a triangle be 1-2x,`(x^2-x+1` and `(x^2-1)` then show that the greatest angle of the triangle is `120^@`

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PATHFINDER-TRIGONOMETRIC FUNCTIONS-QUESTION BANK
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  8. if the lengths of sides of a triangle be 1-2x,(x^2-x+1 and (x^2-1) the...

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  9. If in triangleABC ,sin^4A+sin^4B+sin^4C=sin^2Bsin^2C+2sin^2Csin^2A+2si...

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  10. For any triangle ABC prove that acosA+bcosB +c cosC=2a sinBsinC

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  14. If in a triangle ABC ,atanA +btan B =(a+b)tan((A+B)/2) then prove tha...

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  15. In triangle ABC, D is the mid point of side BC. If AD is perpendicular...

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  16. Perpendicular drawn from the vertices A,B,C upon opposite sides of tri...

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  17. In triangle ABC if cotA +cot B +cot C=sqrt(3(cotAcotB+cotBcotC+cotAcot...

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  18. The sides of a triangle are in A.P. and the greatest angle exceeds the...

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