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The value of expression (2sin^2 91^0-1)(...

The value of expression `(2sin^2 91^0-1)(2sin^2 92^0-1)(2sin^2 180^0-1)` is equal to 0 (b) `1` (c) `2^(90)` (d) `2^(90)-90`

A

0

B

1

C

`2^90`

D

`2^90-90`

Text Solution

Verified by Experts

The correct Answer is:
A
`(2sin^2 91^@-1)(2sin^2 92^@-1)...(2sin^2 180^@-1)`,
In this product there exists a factor `(2sin^2 135^@-1)`, which is equal to zero
Thus, the product of all terms is zero.
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