Răspunsuri

2014-05-19T11:39:24+03:00


=sin x+sin 30+sin x+ sin 60/cos x+cos 30+cos x +cos 60

=2sin x+1/2+√3/2/ 2 cos x +√3/2+1/2

= 2 sin x +1/2+√3/2 *  1 /2cos x +1/2 +√3/2

=2 sinx/2 cos x

=sin x/cos x


2014-05-19T11:46:51+03:00
=sin x+sin 30+sin x+ sin 60/cos x+cos 30+cos x +cos 60 =2sin x+1/2+√3/2/ 2 cos x +√3/2+1/2 = 2 sin x +1/2+√3/2 * 1 /2cos x +1/2 +√3/2 =2 sinx/2 cos x =sin x/cos x