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In a triangle ABC, `angle A+1/2 angle B+angle C= 140^@`, then `angle B` is-
एक त्रिभुज ABC में `angle A+1/2 angle B+angle C= 140^@` तो `angle B` कितना होगा ?

A

`50^@`

B

`80^@`

C

`40^@`

D

`60^@`

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CHAMPION PUBLICATION-2013 TIER-II PAPER(20)-EXERCISE
  1. If p=999, then the value of p(p^2+3p+3) is - यदि p=999, तो p(p^2+3p+...

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  2. Two chords of length 'a' meter and 'b' meter make an angle of 60^(@) a...

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  3. In a triangle ABC, angle A+1/2 angle B+angle C= 140^@, then angle B is...

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  4. The radius of a circle is 6 cm. The distance of a point lying outside ...

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  5. If ABCD be a cyclic quadrilateral in which angle A = 4x^@, angle B = 7...

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  6. G is the centroid of the equilateral DeltaABC. If AB = 10 cm then leng...

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  7. Two chords AB and CD of a circle with centre O, intersect each other a...

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  8. ABCD is a cyclic quadrilateral and AD is a diameter. If /DAC = 55^@ th...

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  9. In triangle ABC a straight line parallel to BC intersects AB and AC at...

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  10. ABC is an isosceles triangle such that AB = AC and AD is the median to...

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  11. A man goes 24m due wes and then 10 m due north. How far is he from the...

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  12. From the top of a tower of height 180 m the angles of depression of tw...

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  13. ABCD is a rectangle of which AC is a diagonal .The value of ...

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  14. If tan x = sin 45^@. cos 45^@ + sin30^@, then value of x is - यदि tan ...

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  15. For any real values of theta,sqrt((sectheta-1)/(Sectheta+1))=?

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  16. If the sum and difference of two angles are 135^(@)and(pi)/(12) ...

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  17. In a Delta ABC, AD divides BC in the ratio 1:3. If angle B=60^(@) ang...

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  18. If sin 3A = cos(A - 26^@), where 3A is an acute angle, find the value...

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  19. Value of sec^(2)theta-(sin^(2)theta-2sin^(4)theta)/(2cos^(4)theta-co...

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  20. If x=a(sin theta+cos theta) and y=b(sin theta-cos theta), then the val...

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