# If then sin-1(A/C) is equal to

1.  π/6

2.  π/4

3.  π/3

4.  π/2

4

&#960;/6

Explanation :
No Explanation available for this question

# Maximum and minimum values of sin2(1200+θ) + sin2(1200-θ) are respectively

1.  3/2,1/2

2.  1/2,0

3.  3/2,0

4.  3/2,1/3

4

3/2,1/2

Explanation :
No Explanation available for this question

# If A+B+C = 0,then sin2A+ sin2B+sin2C is equal to

1.  2-2sinAsinBsinC

2.  2+2sinAsinBsinC

3.  2-2cosAcosBcosC

4.  2+cosAcosBcosC

4

2-2cosAcosBcosC

Explanation :
No Explanation available for this question

# If √sinx+cosx = 0,then 'sin' is equal to

1.  (√5+1)/2

2.  (√5+1)/8

3.  (√5-1)/8

4.  (√5-1)/2

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(&#8730;5-1)/2

Explanation :
No Explanation available for this question

# If x = tanh-1y,then loge[(1+y)/)1-y)]=

1.  x

2.  4x

3.  2x

4.  3x

4

2x

Explanation :
No Explanation available for this question

# If tan-1x+ tan-1y+ tan-1z = π/2,then 1-xy-yz-zx is equal to

1.  0

2.  1

3.  -1

4.  2

4

0

Explanation :
No Explanation available for this question

# If the sum of the squares of the roots of x2-px-3 = 0,then the value of 'p' is equal to

1.

2.

3.  5

4.  -5

4

Explanation :
No Explanation available for this question

1.  1+x+y+z

2.  x+y+z

3.  0

4.  1

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0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

Explanation :
No Explanation available for this question

# The matrix

1.  non-singular

2.  singular

3.  Skew symmetric

4.  symmetric

4

singular

Explanation :
No Explanation available for this question

1.  I-A

2.  (I-A)/2

3.  I+A

4.  (I+A)/2

4