Question

Bantu jawab!! Jawab yg bisa di kerjain aja.. Sertakan cara, mohon bantuannya :(

Answer 1

Sin 105+cos 15 = sin (60+45)+cos (45-30)
                         = sin 60.cos 45+sin 45.cos 60+cos 45.cos 30+sin 45.sin 30
                         = (1/4)(√6+√2+√6+√2)
                         = (1/2)(√6+√2).........opsi E