1

AIEEE 2009

MCQ (Single Correct Answer)

+4

-1

Let

**A**and**B**denote the statements**A**: $$\cos \alpha + \cos \beta + \cos \gamma = 0$$

**B**: $$\sin \alpha + \sin \beta + \sin \gamma = 0$$

If $$\cos \left( {\beta - \gamma } \right) + \cos \left( {\gamma - \alpha } \right) + \cos \left( {\alpha - \beta } \right) = - {3 \over 2},$$ then:

2

AIEEE 2006

MCQ (Single Correct Answer)

+4

-1

If $$0 < x < \pi $$ and $$\cos x + \sin x = {1 \over 2},$$ then $$\tan x$$ is :

3

AIEEE 2004

MCQ (Single Correct Answer)

+4

-1

If $$u = \sqrt {{a^2}{{\cos }^2}\theta + {b^2}{{\sin }^2}\theta } + \sqrt {{a^2}{{\sin }^2}\theta + {b^2}{{\cos }^2}\theta } $$

then the difference between the maximum and minimum values of $${u^2}$$ is given by :

then the difference between the maximum and minimum values of $${u^2}$$ is given by :

4

AIEEE 2004

MCQ (Single Correct Answer)

+4

-1

Let $$\alpha ,\,\beta $$ be such that $$\pi < \alpha - \beta < 3\pi $$.

If $$sin{\mkern 1mu} \alpha + \sin \beta = - {{21} \over {65}}$$ and $$\cos \alpha + \cos \beta = - {{27} \over {65}}$$ then the value of $$\cos {{\alpha - \beta } \over 2}$$ :

If $$sin{\mkern 1mu} \alpha + \sin \beta = - {{21} \over {65}}$$ and $$\cos \alpha + \cos \beta = - {{27} \over {65}}$$ then the value of $$\cos {{\alpha - \beta } \over 2}$$ :

Questions Asked from Trigonometric Ratio and Identites (MCQ (Single Correct Answer))

Number in Brackets after Paper Indicates No. of Questions

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