cos 4x= 1_8 sin square ×cos square x
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Step-by-step explanation:
simplify sin (-11π÷3) tan (35π÷6) sec (-7π÷3) cos (5π÷4) cosec (7π÷4)cos(17π÷6) simplify sin (-11π÷3) tan (35π÷6) sec (-7π÷3) cos (5π÷4) cosec simplify sin (-11π÷3) tan (35π÷6) sec (-7π÷3) cos (5π÷4) (7π÷4)cos(17π÷6) cosec
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