3D Trigonometry (AQA GCSE Maths): Flashcards
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10 cards from this deck
Principles used in 3D trig vs 2D trig
Principles used in 3D trig vs 2D trig
Same fundamental principles
Key strategy for 3D trig problems
Key strategy for 3D trig problems
Break down into simpler 2D triangles
Step 1 of three-step method for line-plane angles
Step 1 of three-step method for line-plane angles
Create a right-angled triangle
Step 2 of three-step method for line-plane angles
Step 2 of three-step method for line-plane angles
Draw a 2D sketch and mark side lengths
Step 3 of three-step method for line-plane angles
Step 3 of three-step method for line-plane angles
Apply trigonometry to find the angle
Theorem often needed to find missing side lengths in 3D
Theorem often needed to find missing side lengths in 3D
Pythagoras' theorem
Do sine and cosine rules work in 3D?
Do sine and cosine rules work in 3D?
Yes, they work perfectly well in 3D
Cosine rule formula
Cosine rule formula
Why cuboids are ideal for learning 3D trig
Why cuboids are ideal for learning 3D trig
They naturally create right-angled triangles
Common mistake in 3D trig problems
Common mistake in 3D trig problems
Trying to solve directly in 3D instead of breaking into 2D