If tan2A / (secA 1)2 = x, then the value of x is
1). (1+cosecA) / (1cosecA)
2). (1+cosA)(1-cosA)
3). (1+cosA) / (1-cosA)
4). (1-cosA) / (1-cosA)
Which of the following is correct?
1). (3x + 4y)(4x- 3y)= 12x2 + 7xy 12y2
2). (3x + 4y)(4x- 3y)= 12x2 + 7xy 9y2
3). (3x + 4y)(4x- 3y)= 12x2 + 8xy 12y2
4). (3x + 7y)(4x- 3y)= 12x2 + 7xy 12y2
If a merchant offers a discount of 40% on the list price, then he makes a loss of 10%. What % profit or % loss will he make if he sells at a discount of
20% of the list price?
1). 4 percent loss
2). 14 percent profit
3). 5.5 percent loss
4). 20 percent profit
An engineering student has to secure 25% marks to pass. He gets 56 and fails by 34 marks. Find the maximum marks.
1). 385 marks
2). 360 marks
3). 410 marks
4). 435 marks
If the radius of a circle is increased by 31% its area increases by ______.?
1). 62 percent
2). 31 percent
3). 35.805 percent
4). 71.61 percent