Value of the expression :1 + 2sin 60° cos60°+1 -

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Value of the expression : 1 + 2sin 60° cos60° +
1 - 2sin 60° cos60° is
sin 60° + cos60° sin 60° - cos60°

Expression

		2 + √3	+	2 - √3
		√3 + 1		√3 - 1

=	(2 + √3)(√3 - 1) + (√3 + 1)(2 - √3)
	(√3 + 1)(√3 - 1)

=	2√3 - + 3 - √3 + 2√3 - + 2 - √3
	3 - 1

=		4√3 - 2√3	=	2√3	= √3
		2		2

Value of the expression :		1 + 2sin 60° cos60°	+	1 - 2sin 60° cos60°	is
		sin 60° + cos60°		sin 60° - cos60°