Lesson
Lesson-6.1.7- Use the formula area of triangle = 1/2 ab sinC . The sine and cosine rules and the formula for area of a triangle are given in the List of formulas.
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Lesson-6.1.6- Use the sine and cosine rules in calculations involving lengths and angles for any triangle. Includes problems involving obtuse angles and the ambiguous case.PreviousLesson-6.1.8- Carry out calculations and solve problems in three dimensions using Pythagoras??? theorem and trigonometry, including calculating the angle between a line and a plane.Next