Lesson 8 8 A Just Started
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Lesson 8-8A Focus: Discover properties of special right triangles called: •30/60/90’s •45/45/90’s
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Intro to sin cos tan
Transcript of Lesson 8 8 A Just Started
Lesson 8-8A
Focus: Discover properties of special right triangles called:
•30/60/90’s•45/45/90’s
Basic Premise #1
• Here’s a 45/45/90 triangle. 45°
45°
A B C
9 2
4
45° 45°
45°
4
694 2 6 2 y
x 9
Compare A and B above. Then find the missing side lengths in C.
In a 45/45/90 triangle, the measure of the hyptenuse is times the measure of a leg.2
2a
a
a
Basic Premise #2
• Here’s a 30/60/90 triangle.
60°
30°
