sin 120 derajat cos 210 derajat - tan 225 derajat=..?

Sin 120°Cos 210° - Tan 225° = ....

• Sin 120° = Sin ( 180 - 60 )
= Sin 60
= 1/2 √3

• Cos 210 = Cos ( 180 + 30 )
= - Cos 30
= - 1/2 √3

• Tan 225 = Tan ( 180 + 45 )
= Tan 45
= 1
Jadi
Sin 120° Cos 210° - Tan 225° = ..
1/2 √3 . ( - 1/2 √3 ) - 1 = ..
- 1/4 . 3 - 1 = ..
- 3/4 - 1 = ..
- 4/4 = ..
= -1
Semoga membantu dan semoga Benar, Sukses selalu semangat ❤