Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities

ஒரு முக்கோணத்தில், ​∠ B = 90° மற்றும் ​∠ A = 30° எனில், sin2 A – cos2 A + tan2 A:

1
– 3/12
2
1/6
3
2/6
4
– 1/6

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