Math Problems Quiz PDF: Questions and Answers - 35

MCQ 171: An arc AB of length of 5 cm is marked on a circle is marked on a circle of radius 3cm. The area of sector bounded by this arc and radii from A anb B is

1. 7.5 cm²
2. 7.5 m²
3. 75 m²
4. 75 cm²

MCQ 172: For S = sum of the roots and P = product of the roots, the quadratic equation is

1. x² +Sx + P = 0
2. x² +Sx - P = 0
3. x² - Sx + P = 0
4. x² - Sx - P = 0

MCQ 173: Two matrices A and B are multiplied to get BA if

1. both are rectangular
2. both have same order
3. no of columns of A is equal to columns of B
4. both are square matrices

MCQ 174: Every integer is also

1. irrational number
2. whole number
3. natural number
4. rational number

MCQ 175: Sin(x+90°) + sin(x-90°) =

1. 1/√(2cos(x))
2. √(3)/2sin(x)
3. 1/√(2sin(x))
4. 0