Question

2 tan 2 45° + cos2 30° - sin
2 60°​

Answer 1

Answer:

2

Step-by-step explanation:

• tan 45=1
• cos 30=root3/2
• sin 60=root3/2

=2tan^2 45+cos^2 30 -sin^2 60

=2×(tan45)^2 +(cos30)^2-(sin60)^2

=2×1 + (root 3/2)^2 + (root3/2)^2

=2 +3/4 -3/4

=2

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