1)sin15=sin(45-30)=sin45.cos30-cos45.sin30?
2)tan75=tan(45+30)= ?
3)cot15=(45-30)=?
4)cot42.cot18-1
________________ = ?
cot42+cot18
5) cos(arctan2+arctan3) değerini bulun
2)tan75=tan(45+30)= ?
3)cot15=(45-30)=?
4)cot42.cot18-1
________________ = ?
cot42+cot18
5) cos(arctan2+arctan3) değerini bulun
Süleyman Oymak 22:36 07 May 2013 #2 
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