hyperbolic cosine or cosh (math) 弦鸣乐器Trad.弦鳴樂器 xián míng yuè qì string instrument 促弦 cù xián to tighten the strings (of a musical instrument) 正弦形 zhèng xián xíng sinusoidal (shaped like a sine wave) 弦外之意
Solved Example on Trigonometry Ques:Which of the following trigonometric ratios is the ratio between adjacent side and hypotenuse? Choices: A. cosine B. tangent C. sine D. none of the above Correct Answer: A Solution: Step 1: The ratio of adjacent side to hypotenuse is cosine....