Tan 225º-Cot81º.Cot69°
Cot261°+Tan21°
II
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Answer:
root 3
Step-by-step explanation:
Tan225-cot81cot69/cot261+tan21=tan 45-tan9tan21/tan9+tan 21=1-tan9tan21/tan9+tan21=1/tan(9+21)=1/tan30=root 3
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Answer:
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