Evaluate: 3/5 sec^2 58° – 3/5 tan 58° cot 32° – 7/5 tan 12° tan 35° tan 45° tan 55° tan 78°.

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asked Mar 15, 2018 in Mathematics by shabnam praween (19,050 points) 5 6 8

Evaluate: 3/5 sec2 58° – 3/5 tan 58° cot 32° – 7/5 tan 12° tan 35° tan 45° tan 55° tan 78°.

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answered Mar 15, 2018 by mdsamim (213,225 points) 5 10 15
selected Mar 20, 2018 by faiz
 
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