Tolong ya, pake cara ok​

Penjelasan dengan langkah-langkah:

Sin 15° = Sin ( 45 – 30 )°

Sin ( 45 – 30 )°

Sin 45° Cos 30° – Cos 45° Sin 30°

√2/2 . √3/2 – √2/2 . 1/2

√2.3 /2.2 – √2/2.2

√6-√2 / 4 (b)…….Nomor 9

Sin 120° = Sin (180° – 60° )

Sin 180° – 60°

Sin 60°

√3/2 (b)……..No 10

Tan 330°

Tan ( 360 – 30° ) ///Berada di kuadran 4 tan (-)

– Tan 30°

– √3/3 (c)…….No 11

semoga bermanfaat ya… ^.^