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The expression ((a+b+c)(b+c-a)(c+a-b)(a...

The expression `((a+b+c)(b+c-a)(c+a-b)(a+b-c))/(4b^(2)c^(2))` is equal to :

A

`cos^(2)A`

B

`sin^(2)A`

C

`cosA cosB cosC`

D

`sinA sinB sinC`

Text Solution

Verified by Experts

The correct Answer is:
B
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