Q&A #193

Teachers' Lounge Discussion: Trigonometry Ratios

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From: Loyd

To: Teacher2Teacher Public Discussion
Date: 2002060206:53:15
Subject: Re: Re: Trig Ratios

On 2001052908:09:48, loyd wrote: >Or alternatively: > >Oscar Hit A Homerun Over Alaska. > In the late 40's, students in my trig class would listen to the old country song on the juke box that went: "Signed, sealed and delivered..." and soon they substituted the phrase, "Sine, Cosine and Tangent...." That phrase helped to remember the order; sine, cosine and tangent. O Oscar Sine = ---- = ------- H Hit A A Cosine =--- =-------- H Homerun O Over Tangent = ---- = ------- A Alaska To find the reciprocal functions, just remember Sin theta goes with the co secant cosine goes with the secant tangent goes with the co tangent. Each pair has a "co." For example, sin does not have a "co" so the only logical one to pick is the cosecant as the reciprocal function. Thus: H Cosecant = ---- O H Secant = --- A A Cotangent = ---- O

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