fix(controller): 直角计算（3x30）修正

pages/formula/rightAngle30.vue

@@ -80,8 +80,8 @@
                 this.formData.dibian = parseFloat(this.formData.dibian)
                 this.formData.biangao = parseFloat(this.formData.biangao)
                 if(this.formData.dibian && this.formData.biangao){
-                    this.rules.xiebian.value = this.formData.dibian * 0.732;
-                    this.rules.slice.value = this.formData.biangao * 0.536
+                    this.rules.xiebian.value = this.formData.dibian * (Math.sqrt(3) - 1);
+                    this.rules.slice.value = this.formData.biangao * 0.5358984
                 }else{
                     this.$u.toast('请输入两个参数');
                 }