2 tan ² 45° + cos² 30° - sin² 60°
please do it... it's urgent...
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Step-by-step explanation:
tan 45° = 1 => tan²45° = 1² = 1
cos 30° = √3/2 => cos²30° = (√3/2)² = 3/4
sin 60° = √3/2 => sin²60° = (√3/2)² = 3/4
therefore 2 tan²45° + cos²30° - sin²60° =>
=> 2×1 + 3/4 - 3/4
=> 2
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