If cosec 45° - sin 30° = x, then x is
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Which of the following numbers is not a prime number?
How many kilometers are there in one metre?
What is the value of a2 + b2a3 - b3, when a + b = 8 and a - b = 2?
A hollow hemispherical bowl is made of silver with its outer radius 8 cm and inner radius 4 cm respectively. The bowl is melted to form a solid right circular cone of radius 8 cm. The height of the cone formed is
The midpoints of AB and AC of a triangle ABC are X and Y respectively. If BC+XY=12 units, then BCXY is
Which of the following numbers is not composite?
An angle in a semicircle is