6.4 · Pythagoras' theorem and trigonometry in 3DLesson 2 of 12Free preview
The diagonal of a face of a cuboid
One rectangular face, one use of Pythagoras' theorem. Keep the answer: the next step needs it.
6.4 · Pythagoras' theorem and trigonometry in 3DLesson 2 of 12Free preview
One rectangular face, one use of Pythagoras' theorem. Keep the answer: the next step needs it.