(i) cot660° + tan(- 1050°)
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3
Answer:
Cos60
Step-by-step explanation:
Cot 660+tan (-1050)
=cot (720-660)+tan {1080 (-1050)}
=Cot 60 + tan 30
=1÷/3 + 1÷/3
=2÷/3
=Cos60
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