Trigonometry & Geometry with Spreadsheets
Learn practical trigonometry and geometry by computing it: radians, SOH CAH TOA, Pythagoras and coordinates, the laws of sines and cosines, Heron's formula, volumes for material estimates, sine waves and vector bearings in 8 hands-on labs from surveying, roofs, ramps and navigation.
The first lesson is free — no account needed.
About this course
A trigonometry and geometry course where every formula is worked out on a real task from surveying, roofing and building sites, for students, tradespeople and anyone who needs SOH CAH TOA again. You convert degrees to radians for Excel's SIN and COS and survey bearings from degrees, minutes and seconds, find ramp, rafter and ladder angles with ATAN and ACOS, measure plan and slope distances between survey points with Pythagoras and check that a corner is square, measure a river's width with the law of sines and a missing fence side with the law of cosines, calculate plot areas with Heron's formula, estimate tank and gravel volumes for material orders, model a tide with a sine wave and add up a drone's flight legs into a resultant distance and an ATAN2 bearing. The first lab is free.
Lessons
- Degrees & Radians: Converting Angles for Excel's Trig FunctionsFree
- Right-Triangle Trig: SIN, COS, TAN and Their Inverses Pro
- Pythagoras & Distance: Survey Points, Slopes and Square Corners Pro
- Law of Sines & Law of Cosines: Solving Any Triangle Pro
- Areas & Perimeters: Heron's Formula, Regular Polygons & Sectors Pro
- Volumes & Surface Areas: Tanks, Gravel Piles and Material Estimates Pro
- Unit Circle & Periodic Functions: Modelling a Tide with a Sine Wave Pro
- Vectors & Bearings: Components, Resultant and ATAN2 Heading Pro