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" 14."quad (cos80^(@))/(sin10^(@))+cos59...

" 14."quad (cos80^(@))/(sin10^(@))+cos59^(@)coscc31^(@)-

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(cos80^(@))/(sin10^(@))+cos59^(@)cos ec31^(@)=2

Prove that : (cos80^(@))/(sin10^(@))+cos59^(@)cosec31^(@)=2

(sin31^(@))/(2cos59^(@))=

Evaluate : (cos80^@)/(sin10^@)+cos59^@ cosec31^@ .

(sec70^(@))/(csc20^(@))+(sin59^(@))/(cos31^(@))

Prove that ((cos70^(@))/(sin20^(@)))+((cos59^(@))/(sin31^(@)))-8cos^(2)60^(@)=0

Evaluate : (cos 70^(@))/(sin 20^(@))+(cos 59^(@))/(sin31^(@))-8sin^(2)30^(@)

Evaluate : (cos 70^(@))/(sin 20^(@))+(cos 59^(@))/(sin31^(@))-8sin^(2)30^(@)

(sin30^(@)17)/(cos59^(@)43)

Prove that: (cos80^@)/(sin10^@)+cos59^@\ cosec\ 31^@=2