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The principal amplitude of (sin40^(@)+ic...

The principal amplitude of `(sin40^(@)+icos40^(@))^(5)` is

A

`70^(@)`

B

`-110^(@)`

C

`110^(@)`

D

`-70^(@)`

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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2008-MULTIPLE CHOICE QUESTIONS
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  3. The principal amplitude of (sin40^(@)+icos40^(@))^(5) is

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  8. If the magnitude of the coefficient of x^(7) in the expansion of (ax^(...

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  9. The mapping f:NrarrN given by f(n)=1+n^(2), n in N where N is the set ...

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  10. A and B are two points on the Argand plane such that the segment AB is...

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  14. Select the correct statement from (A), (B), (C ), (D). The function f(...

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  16. The function f(x)=e^(ax)+e^(-ax),agt0 is monotonically increasing for

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  18. If ""^(16)C(r)=""^(16)C(r+1) then the value of ""^(r)P(r-3) is

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  20. If the matrix [(a,b),(c,d)] is commutative with the matrix [(1,1),(0,1...

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