Question

(5) The area of the parallelogram whose adjacent sides are determined by ā =î+2jcap+3kcap
and b dash = -3î+ 2jcap;+ k cap is​

Answer 1

Step-by-step explanation:

2. Find te sum of the zeroes of the polynonmial shown in the graph.

3. The number of common solutions for the pair of equations 5x -4y- 15 = 0 and 10x -8y= 30 is

(1 mark)

4. For what value of k, will the pair of linear equations 6x - 7y= 18 and 9x +(5k-3)y= 27 have infinite number

of solutions? (1 mark)

5. The point (2, 3) is 5 units away from the point (x, 0), then x can be (I mark)

OR

If A(2, 3), B(2, 9) and C(k, -6) are collinear, then the value of k is .

6. If tan 6+ sec 6, then, tan 6- sec =. (1 mark)

OR

sin

1-cos

7. The tops of two towers 20 m and 30 m high are joined by a string. The string makes an angle of 30° with the

horizontal. Find the length of the string. (1 mark)

8. The zeroes of the polynomial plt) = 3x? -2x-8 are (1 mark)

OR

The common difference of the arithmetic progression:-5,-

9. The term of then AP: 4, 2, 0,-2,.. is (1 mark)

10. In the given figure, AT is a tangent to the circle with centre 'O' such that OT=4 cm and 20TA=30°. Then AT

is equal to (1 mark)

Cm

A

OR

In the given fgure, AB is a chord of the outer circle and tangent to the inner circle. If the circkes are concentric

and their radii are 13 cm and 5 cm, then find the length of the chord AB