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If A+C=2b, then the value of (cos C - co...

If `A+C=2b,` then the value of `(cos C - cos A)/(sin A-sin C)` is-

A

`cot B`

B

` tan B`

C

` tan 2B`

D

`cot 2B`

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The correct Answer is:
B
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CHHAYA PUBLICATION-MCQ's-QUESTION PAPER 4
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  2. In any triangle ABC, the valur of a(cos ^(2) B+ cos ^(2)C)+ cos A (b ...

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  3. If A+C=2b, then the value of (cos C - cos A)/(sin A-sin C) is-

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  4. If sin 44theta = cos theta , then the value of tan 15 theta is-

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  5. If cos theta ne 1/2, then the solution of the equation cos 2 theta =(...

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  6. The value of sin 6^(@) sin 66^(@) is equal to-

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  7. If y= (1+ tan A) (1- tan B) where A-B =pi/4, then the value of (y+1) ^...

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  8. ABC is a right angle isosceles triangle with angleB=90^(@). If D is a ...

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  9. If tan x =a/b, then the value of (a^(2) + b^(2)) sin 2x is-

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  10. If sin A +sin B =2, then the value of cos (A+B) is-

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  11. If sin theta""25/25 and 0^(@) lt theta 90^(@), then the value of sin "...

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  12. If x sin ^(3) theta + y cos ^(3) theta = sin theta cos theta and x sin...

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  13. The equation sin x + sin y + sin z =-3 for 0 le x le 2pi,0 lt y le 2p...

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  14. In a Delta ABC, if b=20, c=21and sin A =3/5, then the value of a is

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  15. The equation 3 cos theta + 4 sin theta =6 has -

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  16. Draw the graph of the function, f(x) = 2x - 5.

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  17. In triangle ABC, the value of [a^(3) cos (B-C)+b^(3) cos (C-A) +c^(3) ...

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  18. In a triangle ABC, a=2 cm, b=3 cm and c=4 cm, then the value of cos A ...

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  19. If sin theta = sin (-600^(@)), then one of the possible values of thet...

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  20. Two roots of the quadratic equation x^(2) +3i x+ 10=0 are-

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