If α is a complex number such that α2 + α + 1 = 0, then what is α31 equal to?
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If ω is the cube root of unity, then what is the conjugate of 2ω2 + 3i?
If one root of 5x2+13x+k=0 is reciprocal of the other, then k is equal to
If the roots of a quadratic equation ax2 + bx + c = 0 are α and β, then the quadratic equation having roots α2 and β2 is
Consider the following statements
I. The matrix is singular.
II. The matrix is non-singular.
Q.
Which of the above statement is/are correct?
Consider the following statements
I. Every zero matrix is a square matrix.
II. A matrix has a numerical value.
III. A unit matrix is a diagonal matrix.
Q.
Which of the above statement is/are correct?
If A + B + C = π/2, then what is the value of tan A tan B + tan B tan C + tan C tan A?
If (sin x + cosec x)2 + (cos x + sec x)2 = k + tan2xcot2x, then what is the value of k?
A vertical tower stands on a horizontal plane and is surmounted by a vertical flag staff of height h. At a point P on the plane, the angle of elevation of the bottom of the flag staff α and that of the top is β. What is the height of the tower?
Looking from the top of a 20 m high building, the angle of elevation of the top of a tower is 60o and the angle of depression of its bottom is 30o. What is the height of the tower?
If the angles of a triangle are 30o and 45o and the included side is cm, then what is the area of the triangle?
If, in general, the value of sin A is known but the value of A is not known, then how many values of tan can be calculated?
The equation to the locus of a point which is always equidistant from the points (1, 0) and (0, –2) is
1 docs|91 tests
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1 docs|91 tests
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