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Find the A.M. between: ( cos theta + ...

Find the A.M. between:
`( cos theta + sin theta )^(2) ` and `( cos theta - sin theta)^(2)`

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ICSE-SEQUENCE AND SERIES -EXERCISE 14 (d)
  1. Find the A.M. between: 6 and 12

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  2. Find the A.M. between: 5 and 22

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  3. Find the A.M. between: ( cos theta + sin theta )^(2) and ( cos the...

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  4. Find the A.M. between: (x+y)^(2) and (x-y)^(2)

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  5. Insert : (i) 3 arithmetic means between 5 and 17 . (ii) 4 arithmet...

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  6. Find two numbers whose product is 91 and whose A.M. is 10.

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  7. If p arithmetic means are inserted between a and b, prove that d = (b-...

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  8. The sum of three numbers in A.P. is 33, and the sum of their squares i...

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  9. There are four numbers in A. P., the sum of the two extremes is 8, and...

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  10. The sum of the first three terms of an A.P. is 36 while their product ...

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  11. The angles of a triangle are in A.P. If the greatest angle is double t...

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  12. The sum of the first three consecutive terms of an A.P. is 9 and the s...

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  13. a(1),a(2),a(3),a(4),a(5), are first five terms of an A.P. such that a(...

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  14. The angles of a quadrilateral are in A.P. and the greatest angle is do...

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  15. If a,b,c are in A.P. show that a((1)/(b)+(1)/(c)),b((1)/(c)+(1)/(a))...

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  16. If (1)/(x) , (1)/(y) , (1)/(z) are A.P. show that xy,zx,yz are in A....

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  17. If (1)/(x) , (1)/(y) , (1)/(z) are A.P. show that xy,zx,yz are in A....

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  18. If (1)/(x) , (1)/(y) , (1)/(z) are A.P. show that (y+z)/(x) , (z+x)/...

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  19. If (b+c)^(-1), (c+a)^(-1), (a+b)^(-1) are in A.P. then show that (a)/(...

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  20. If (b+c-a)/(a) , (c+a-b)/(b) , (a+b-c)/(c) are in A.P. then prove that...

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