Plz solve this sum . Cot (-15/4π).
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Step-by-step explanation:
cot(-15/4)
=cot(-15π/4)
=cot(-15*180/4)
=cot((-15*45)
=cot(-675)
=–cot(90*7+45)
=–(–cot45)
=–(–1)
=1
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