YOU SAID:
YOU LISE THE DOUBLE AND TRIPLE-ANGLE FORMULAS, AND COS 0= X.
INTO JAPANESE
二倍角と三倍角の公式と、COS 0= X を使います。
BACK INTO ENGLISH
Use the double angle and triple angle formulas and COS 0= X.
INTO JAPANESE
2 倍角と 3 倍角の公式と COS 0= X を使用します。
BACK INTO ENGLISH
Use the double angle and triple angle formulas and COS 0= X.
That didn't even make that much sense in English.