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If in triangleABC ,3a^2=b^2+c^2 then cot...

If in `triangleABC ,3a^2=b^2+c^2` then cotB+cotC-cotA=

A

1

B

0

C

`ac/4triangle`

D

`ab/4triangle`

Text Solution

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The correct Answer is:
B
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PATHFINDER-TRIGONOMETRIC FUNCTIONS-QUESTION BANK
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  2. If in triangleABC a=2b and angle A=3 angleB then angleA=

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  4. cos A/2=sqrt((b+c)/(2c)) then the correct option is

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  5. The length of three sides of a triangle be 1cm,2cm and 3 cm then the v...

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  6. In an isosceles triangle ABC ,angleA =120^@ ,a:b=

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  7. In triangle ABC if sin^2B+sin^2C=sin^2A then

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  8. If the ratio of the angles of a triangle be 1:2:3 and the circumradius...

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  9. If in triangleABC ,a=5cm b=5sqrt3 and angleC=30^@ then c=

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  10. If in triangle ABC ,angleC=90^@ then tanA+tan B=

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  11. If in triangleABC a=3cm, b=5cm and c=7cm then the triangle is

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  12. If the ratio of the length of the sides of a triangle be 1:sqrt3:2 the...

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  13. In triangleABC if C=pi/2 then the greatest value of sinAsinB is

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  14. If in a triangle ABC ,(a-b+c)/a=b/(b+c-a) then angleC=

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  15. In triangleABC if c^2=a^2+b^2 then 4s(s-a)(s-b)(s-c)=

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  16. If in triangleABC a=3cm,b=5cm and angle C=120^@ then c=

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  17. If 2cosA=sinB/sinC then show that the triangle is an isosceles triangl...

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  18. If (sinA)/3=(sin B)/3=(sin C)/4 then prove that cosC=1/9

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  19. The lengths of sides of triangle ABC are a units, b units and sqrt(a^2...

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