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If a = sqrt3, b = (1)/(2) (sqrt6 + sqrt2...

If `a = sqrt3, b = (1)/(2) (sqrt6 + sqrt2), and c = sqrt2`, then find `angle A`

A

`30^@`

B

`60^@`

C

`75^@`

D

none

Text Solution

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The correct Answer is:
B
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ML KHANNA-PROPERTIES OF TRIANGLES -Problem Set (2)(MULTIPLE CHOICE QUESTIONS)
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  2. The sides of a triangle are a,b and sqrt(a^(2)+b^(2)+ab) then the grea...

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  3. The sides of the triangle are sinalpha , cosalpha and sqrt(1+sinalphac...

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  4. (b + c) cos A +(c + a) cos B+(a+b) cos C=

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  5. In a triangle Sigma(b + c) cos A=3 root3(abc), then the triangle is

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  6. (a+b+c) (cos A+cos B+cos C) =

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  8. In a Delta ABC, a,b,A are given and c(1), c(2) are two valus of the t...

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  9. In a triangle ABC, a= 4, b = 3, angleA= 60°. Then, c is the root of th...

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  10. If in a triangle ABC angle B=60^@ then

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  11. If, in a Delta ABC, b^(2) + c^(2) = 3a^(2), then : cot B + cot C - c...

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  12. If the sides a triangle are in the ratio 2:sqrt6:(sqrt3 + 1), then the...

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  13. The sides of a triangle are in the ratio 2:sqrt6:sqrt3+1, then its ang...

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  14. The sides of a triangle are in the ratio 1:sqrt3:2 then the angles of ...

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  16. If x, y gt 0, then prove that the triangle whose sides are given by 3x...

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  17. In triangleABC, if a^(2)+c^(2)-b^(2)=ac, then angleB=

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  18. If the angles A, B, C of the triangle ABC be in A.P., then (a+c)/(sqrt...

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  19. In a !ABC , if 1/(b+c)+1/(c+a)=3/(a+b+c), then angleC=

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  20. If cos A= (sinB)/(2 sinC), " then " Delta ABC is

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