Question

9 tan² 30° - 4 sin² 45°​

Answer 1

9 tan^2 30 - 4 sin^2 45

9(1/√3)^2. - 4(1/√2)^2

9 × 1/3 -. 4×1/2

9/3-4/2

2×9-3×4/6

18-12/6

6/6

1

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