Question

1. Write A = {1/2 ,2/5, 3/10, 4/17 } in set builder form

2. Convert 50 351 into radians.

3. Solve 3x2 +2x +1 = 0

4. Write cos4x in terms of sin x.

5. Find range of relation R={(x , y): x-2y=2, x, y ϵ {1,2,3,…,15}}.

6.The square of i is

(a) -1 (b)( 1- i )/√2 (c) (1 +i)/√2 (d) none of these.

7. I f z1 = 1 +2i, ⃑ = -2-3i , then ZZ1 is

(a) –i -8 (b) 4-7i (c) - 4 +7i (d)none of these.

8.The range of f(x)=3-5x, x ϵ R, x< -2 is

(a) (3, ∞) (b) (13, ∞) (c) (- ∞, 3) (d) (- ∞, -7)

9.Find tan



10.If sin x = −

√



, π < x <





, find sin



.

11.Let f = { ( ab, a + b ) ; a, b ϵN}. Is f a function from n to N ? Justify.

12. Draw Venn diagram for (A   ) − (  − C )
13. Write Sin2x + sin x as a product of two trigonometric functions.

(OR)

Find the value of tan(π/8)





14. Write signum function and greatest integer function and also draw their

graphs.



15. Convert

+√

into standard form.



16.Prove that cos 6x + 1 = 32 cos6 x – 48cos4 x + 18cos2 x

( OR )

If sin x + sin y = a and cos x + cos y = b,

then find (i) sin (x + y) (ii) cos (x + y)

17. Prove that sin7x + sin3x + sin x + sin5x = 4sin4x cos x cos2x

( OR )

Prove that 16cos6

0 cos420 cos660 cos780

= 1

18. In a group of 498 students, 142 know Hindi, 171 know Telugu and 49

know Hindi only, 83 know both Hindi & Tamil, 9 know none of the languages,

92 know both Telugu & Tamil and 14 know all 3 languages Find number of

student who know (i) Hindi but not Tamil (ii) Telugu or Tamil, (iii) Tamil only.

please answer urgent please​

Answer 1

Answer:

answer for 2 question is

50351 is converted into radian

0.2441085366

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I will try next question also

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