He asked me to give him a written answer.
他要我给他一个书面答复。
Check your written answer to make sure it is right.
检查你写的答案,确定它是正确的。
Comprises questions that require a brief written answer in the space provided.
请简单回答,并将答案写在空白栏位上。
His idea was, the formula written for the opposite one will have the opposite angle; That turns out to be the correct answer.
他的方法是,反过来的方程,以相反的角来表示,那就能推出正确的答案了
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