Lesson 2.6.5: unknown angles |
For this lesson there are 15 steps for you to take. Scroll down and do each step one-by-one. The instructions under each step will help clarify exactly what you need to do, so please read all the instructions.
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Here is the Lesson 2.6.5 Worksheet
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1.) Start Notes: Targets
Title your notes and write the targets listed below.
Title your notes and write the targets listed below.
- I know what the inverses of sine, cosine, and tangent are.
- I can use ArcSine, ArcCosine, and ArcTangent to find missing angles.
3.) Video: Warm Up
Watch this video to see how I worked through the warm up. |
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5.) Video: Missing Angle?
Watch this video to see how I found the missing angle. I introduce something very new and very important in this video. |
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6.) Video: Inverse Trig Functions
We already know that the inverse of addition is subtraction and the inverse of multiplication is division. But what is the inverse of sin, cos, or tan? In this video we discover how to find missing angles using the inverse of these trig ratios. |
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7.) Website: Explore Arcsin
If you would like to explore ArcSin, go to this website. You can change the size and shape of a right triangle to see how it affects the ArcSin calculation.
http://www.mathopenref.com/arcsin.html
If you would like to explore ArcSin, go to this website. You can change the size and shape of a right triangle to see how it affects the ArcSin calculation.
http://www.mathopenref.com/arcsin.html
9.) Video: Practice 1
Watch this video to see how I worked through Practice 1. |
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11.) Video: Practice 2
Watch this video to see how I find the angle that was used to build the shelf in Practice 2. |
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13.) Video: Practice 3
Watch this video to see how I worked through Practice 3. |
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