solve 30 no question
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We know that, sin 60° = √3/2, cos 30° = √3/2 and tan 30° = 1/√3.
So, 2sin²60° + 3cos²30° - tan²30°
= 2(√3/2)² + 3(√3/2)² - (1/√3)²
= 2(3/4) + 3(3/4) - 1/3
= 6/4 + 9/4 - 1/3
= 6+9/4 - 1/3
= 15/4 - 1/3
= 15×3/4×3 - 1×4/3×4 (By taking LCM of 4 and 3)
= 45/12 - 4/12
= 45-4 / 12
= 41/12.
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