Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities

એક ત્રિકોણમાં ∠ B = 90° અને ∠ A = 30° હોય તો sin² A - cos² A + tan² A:

1

- 3/12

2

1/6

3

2/6

4

- 1/6

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