Question

10.
A chord of a circle of radius 10 cm, subtends a right angle at its centre.
The length of the chord (in cm) is
(b) 5/2
(c) 1012
(d) 103
1
Question numbers 11 to 15, fill in the blanks :
11. The value of (tan60° + sin2459) is
12. The corresponding sides of two similar triangles are in the ratio 3:4, then
the ratios of the area of triangles is
13. Value of the roots of the quadratic equation, x2 – 3 – 6 = 0 are
14.
The area of triangle formed with the origin and the points (4, 0) and (0, 6)
is
OR
The co-ordinate of the point dividing the line segment joining the points
A(1, 3) and B(4, 6) in the ratio 2:1 is
15.
sin cos 43°
The value of -
cos (90 - 0) * sin 47°
Question numbers 16 to 20, Answer the following:
16. If 3k - 2, 4k - 6 and k + 2 are three consecutive terms of A.P., then find the
value of k.
17. Find the value of (cos 48° – sin 42°).
OR
Evaluate : (tan 239) (tan 670)

Answer 1

Answer:

17) (cos(90-42)-sin42)

sin42-sin42=0