4sin^2 60 - cos^2 45 ÷ tan^2 30 + sin^2 0
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Answer:
=4×√3/2×√3/2 - 1√2×1√2 ÷ 1√3×1√3 + 0
=4×3/4 - 1/2 ÷ 1/3 + 0
=4×3/4 - 1/2×2/2 ÷ 1/3 +0
=4×3/4 - 2/4 ÷ 1/3
=4×1/4 ÷ 1/3
=1/1×3/1
=3.
Step-by-step explanation:
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