45-45-90 Right Triangles in SAT Math π
Learn the basics of 45-45-90 triangles and how to use them to solve problems in trigonometry and geometry for the SAT.

The Organic Chemistry Tutor
275.2K views β’ Nov 7, 2017

About this video
This video tutorial provides a basic introduction into 45-45-90 right triangles and explains how to use this special reference triangle to find the value of the missing sides of another triangle. This information is useful for students taking trigonometry or geometry in high school and college and for those studying the sat math and act math sections. This video contains plenty of examples and practice problems.
Trigonometry - Free Formula Sheet:
https://www.video-tutor.net/formula-sheets.html
Trigonometry Final Exam Review:
https://www.youtube.com/watch?v=OAsbx4TEnL0
Final Exam and Test Prep Videos:
https://bit.ly/41WNmI9
_______________________________
Polygons:
https://www.youtube.com/watch?v=E_-3ulbtcLk
Quadrilaterals:
https://www.youtube.com/watch?v=ogcH3eM5beM
Points, Lines, Planes, & Segments:
https://www.youtube.com/watch?v=dDWjhRfBsKM
Similar Triangles:
https://www.youtube.com/watch?v=YiFwvAFk-xs
Pythagorean Theorem:
https://www.youtube.com/watch?v=d8EA5TxGzcY
_________________________________
The Distance Formula:
https://www.youtube.com/watch?v=YDvUy5VYm9E
Distance Between 2 Points - 3D:
https://www.youtube.com/watch?v=0c6cP2zLC2c
Special Right Triangles - 30 60 90:
https://www.youtube.com/watch?v=p70UBGCHZrQ
Trigonometric Ratios:
https://www.youtube.com/watch?v=9-eHMMpQC2k
_________________________________
Angle of Elevation Word Problems:
https://www.youtube.com/watch?v=uyKvSe6Ltgs
Finding The Missing Side of a triangle:
https://www.youtube.com/watch?v=tielQ3ejh70
Finding The Missing Angle of a Triangle:
https://www.youtube.com/watch?v=4Dv5IFqATrc
Two Triangle Trigonometry Problems:
https://www.youtube.com/watch?v=OTP885mApV8
How To Find the Area of a Rectangle:
https://www.youtube.com/watch?v=M8JdRHeQBW8
________________________________
Final Exams and Video Playlists:
https://www.video-tutor.net/
Full-Length Videos and Worksheets:
https://www.patreon.com/MathScienceTutor/collections
Trigonometry - Free Formula Sheet:
https://www.video-tutor.net/formula-sheets.html
Trigonometry Final Exam Review:
https://www.youtube.com/watch?v=OAsbx4TEnL0
Final Exam and Test Prep Videos:
https://bit.ly/41WNmI9
_______________________________
Polygons:
https://www.youtube.com/watch?v=E_-3ulbtcLk
Quadrilaterals:
https://www.youtube.com/watch?v=ogcH3eM5beM
Points, Lines, Planes, & Segments:
https://www.youtube.com/watch?v=dDWjhRfBsKM
Similar Triangles:
https://www.youtube.com/watch?v=YiFwvAFk-xs
Pythagorean Theorem:
https://www.youtube.com/watch?v=d8EA5TxGzcY
_________________________________
The Distance Formula:
https://www.youtube.com/watch?v=YDvUy5VYm9E
Distance Between 2 Points - 3D:
https://www.youtube.com/watch?v=0c6cP2zLC2c
Special Right Triangles - 30 60 90:
https://www.youtube.com/watch?v=p70UBGCHZrQ
Trigonometric Ratios:
https://www.youtube.com/watch?v=9-eHMMpQC2k
_________________________________
Angle of Elevation Word Problems:
https://www.youtube.com/watch?v=uyKvSe6Ltgs
Finding The Missing Side of a triangle:
https://www.youtube.com/watch?v=tielQ3ejh70
Finding The Missing Angle of a Triangle:
https://www.youtube.com/watch?v=4Dv5IFqATrc
Two Triangle Trigonometry Problems:
https://www.youtube.com/watch?v=OTP885mApV8
How To Find the Area of a Rectangle:
https://www.youtube.com/watch?v=M8JdRHeQBW8
________________________________
Final Exams and Video Playlists:
https://www.video-tutor.net/
Full-Length Videos and Worksheets:
https://www.patreon.com/MathScienceTutor/collections
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Video Information
Views
275.2K
Likes
4.8K
Duration
10:28
Published
Nov 7, 2017
User Reviews
4.7
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