Question

EVALUATE 2SINSQUARE 30 DEGREE -3COS SQUARE45 DEGREE+TAN SQUARE 60 DEGREE

Answer 1

Answer

2sin^2 30°- 3cos^2 45° + tan^2 60°

= 2 × ( 1/2)^2 - 3 × ( 1/√2)^2 + ( √3) ^2

= 2× 1/4 - 3×1/2 + 3

= 1/2 - 3/2 + 3

= 1 -3 + 6 / 2

= -2 +6 /2

= 4/2

= 2

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