Evaluate = sin square 30+ cos square 60- tan square 45
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Answer: -1/2
Step-by-step explanation:
sin ²30° + cos²60° - tan ² 45°
= (1/2)² + (1/2)² -(1)²
= 1/4 +1/4 - 1
= 1/2 -1
= -1/2
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