Question

1. In ABC, if AB : BC : AC = 21 : 20 : 29, then find
the value of sinC.
(A)20/29 (B)21/20
(C)21/29 (D)20/21

2. If A and B are the remainders when the
4 3 2
polynomial 2x – 8x + 5x + px + 1 is divided by
x - 2 and x - 1 respectively and A + B = 10, find the
value of p.
(A) 6 (B) 7
(C) 8 (D) 9

3. If 4x – y = 13 and xy = 12, find the value of
3 3
64x – y .
(A) 210 (B) 9984
(C) 156 (D) 4069

4. In a parallelogram ABCD, if the bisectors
of A and B intersect at P, then find APB .
o o
(A) 60 (B) 90
o o
(C) 120 (D) 100

5. For 1/21, the repeating block of digits in the
quotient is 047619. What is the repeating block of
digits for 20/21?
(A) 952, 380 (B) 20
(C) 476,190 (D) none of the above
20
29
21
20
21
29
20
21

Answer 1

Answer:

1. c
2. b
3. a
4. b
5. a

Step-by-step explanation:

1. This means that AB=21 cm, BC= 20 cm and AC is the hypotenuse = 29 cm

sin C= 21/29 (as sin theta= perpendicular which is the shortest side /hypotenuse)... So, c is correct.

2 &3 . Question not written appropriately.

4.  When bisectors of parrallelogram bisect, they always intersectmaking 90 degree as the angle. SO, b is correct.