Solve trig equations with exact solutions - the easy way (unit circle)
18.4 هزار بار بازدید -
5 سال پیش
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A simple way to visualise
A simple way to visualise trigonometric equations lets us solve them quickly using spatial intuition. No need for CAST or ASTC (all stations to central/all students take calculus) mnemonics. I remember Dr Hoffman saying "This is how trigonometry should be taught in schools" before he showed us these techniques.
In this video I'll just be covering simple trig equations with exact solutions, for both degrees and radians. For example, equations like sin theta = -1/2, cos theta = sqrt(2)/2, tan theta = -sqrt(3), sin theta = -sqrt(3)/2, cos theta = 1/2, tan theta = -1, and sin theta = 0. And I'll show you how to work with radians so you can find angles like 11pi/6 or 5pi/4 on the unit circle.
I'm an online maths tutor. Go to http://thawom.com/tutoring to learn more.
Twitter: Twitter: thawom0
In this video I'll just be covering simple trig equations with exact solutions, for both degrees and radians. For example, equations like sin theta = -1/2, cos theta = sqrt(2)/2, tan theta = -sqrt(3), sin theta = -sqrt(3)/2, cos theta = 1/2, tan theta = -1, and sin theta = 0. And I'll show you how to work with radians so you can find angles like 11pi/6 or 5pi/4 on the unit circle.
I'm an online maths tutor. Go to http://thawom.com/tutoring to learn more.
Twitter: Twitter: thawom0
5 سال پیش
در تاریخ 1397/11/29 منتشر شده
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