所謂“最簡三角方程”,又名“基本三角方程”,是指形呈“fun x=a”的三角方程,其中記号“fun”是三角函数记号[sin,cos,tg(或tan),ctg(或cot),sec,cosec(或csc)]的概括表示,又x为未知角而a为已知实数。由于在中学三角課本里所有三角方程都可以归結为基本三角方程或关于相同三角函数的代数方程(事实上这种方程最后还是要归結为最簡三角方程的),所以把最簡三角方程作为重点讲解、是 The so-called “simplest triangular equation”, also known as “basic triangular equation,” refers to a triangular equation with the form “fun x=a”, where the notation “fun” is a trigonometric function notation [sin, cos, tg (or tan), A generalized representation of ctg (or cot), sec, cosec (or csc), where x is an unknown angle and a is a known real number. Since all the trigonometric equations in the middle school triangle textbooks can be attributed to basic trigonometric equations or algebraic equations about the same trigonometric function (in fact this type of equation is still reduced to the simplest trigonometric equation), the simplest trigonometric equation As a key explanation, it is