2sin 52°/ cos 38- tan 70° cot 20+ cos ^2 63° + sin 63° × cos 27° + sin55°× sec35 ° / tan7° tan 45° tan 83°
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tricks [A+B=90°=1]
for ex:- 80°×10°=1
54°-34°=1
sine kuchh bhi ho man 1 hota hai.
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