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Show that: cot16^@*cot 44^@+cot44^@*cot7...

Show that:` cot16^@*cot 44^@+cot44^@*cot76^@-cot76^@*cot16^@=3`

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Show that: cot16^(@)*cot44^(@)+cot44^(@)*cot76^(@)-cot76^(@)*cot16^(@)=3

Prove that cot 16^@ cot 44^@ + cot 44^@ cot 76^@ -cot 76^@cot 16^@ = 3

Show that, cot16^(@) cot44^(@) + cot44^(@) cot76^(@) + cot76^(@) cot 16^(@) = 3

cot16^(0)cot44^(0)+cot44^(0)cot76^(0)-cot76^(0)cot16^(0)

cot16cot44+cot44cot76-cot76cot16=

cot 16^(@) cot 44^(@) + cot 44^(@) cot 76^(@) - cot 76^(@) cot 16^(@)=

cot12^(@)cot102^(@)+cot102^(@)cot66^(@)+cot66^(@)cot12^(@) =

cot10^(@)cot20^(@)cot60^(@)cot70^(@)cot80^(@)=

cot16^(0)cot44^(0)+cot44^(0)cot76^(0)-cot76^(0)cot16^(0)=(a)1(b)2(c)3(d)4