Trigonometry in Triangles
8 lessons · 20 questions · 2 PYQs
What the exams ask here
- AB=AC=x, angle θ, R=y find x/y
- sin of angle from sides
- angles in AP with sin(2A + B) = 1/2 -> sin(B + 2C) (Indore 2021 Q15)
- angle B = 90, BC = 5, AC - AB = 1 -> (1 + sin C)/(1 + cos C) (JIPMAT 2023 Q30)
- x^2 + y^2 < z^2 -> obtuse; sides from the angle ratio 1:2:3 and R
Lessons
- Start hereThe idea and the methodFirst lesson of Trigonometry in Triangles
- 1.Sine rule circumradius4 questions + fresh variants
- 2.Cosine rule5 questions + fresh variants
- 3.Isosceles circumradius relation1 question + fresh variants
- 4.Area half ab sin3 questions + fresh variants
- 5.Angles in AP triangle1 question + fresh variantsIndore 2021
- 6.Right triangle ratios3 questions + fresh variantsJIPMAT 2023
- 7.Triangle nature from sides3 questions