Question

Tolong dibantu gan
Trigonometri smk kelas x
no 3 dan 4

Answer 1

Sin 300 = sin (360-60) = -sin60 = -½√3
cos 135 = cos (90+45) = -sin45 = -½√2
tan 225 = tan (180+45) = tan45 = 1
3. -½√3×-½√2 / 1 = ¼√6
cos 330 = cos (360-30) = cos30 = ½√3
cos 315 = cos (360-45) = cos45 = ½√2
tan 135 = tan (180-45) = -tan45 = -1
4. ½√3×½√2×-1 = -¼√6