a^2 = b^2 + c^2 - 2·b·c·cosA这个语法怎么读?
问题描述:
a^2 = b^2 + c^2 - 2·b·c·cosA这个语法怎么读?
答
a squared is equal to b squared plus c squared minus 2 times b times c times cosA.
PS做数学题时一般不会去管什么语法的