Evaluate 1-tan²30°/1+tan²30°
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7
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Answered by
9
Answer:
ans=1/2
Step-by-step explanation:
=1-tan²30 ÷1+tan²30
=1-(1/√3)² ÷1+(1/√3)²
=1-1/3 ÷ 1+1/3
=3-1/3 ÷ 3+1/3
=2/3 ÷4/3
=2/3 ×3/4
=1/2
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