Trigonometry की जबरदस्त Tricks जिनको आप कभी नहीं भुला पाएंगे !
Six Important Trigonometric Functions
sin A=opposite side/hypotenuse=BC/AC
cos A=adjacent side/hypotenuse=AB/AC
tan A=opposite side/adjacent side=BC/AB
cosec A=hypotenuse/opposite side=AC/BC
sec A=hypotenuse/adjacent side=AC/AB
cot A=adjacent side/opposite side=AB/BC
Relation between Trigonometric Ratios
cosec θ =1/sin θ
sec θ = 1/cos θ
tan θ = sin θ/cos θ
cot θ = cos θ/sin θ=1/tan θ
in ∆ABC,
Hypotenuse, AC = 5cm
Base, BC = 3cm
Perpendicular, AB = 4cm
Then, by the trigonometric ratios, we have;
tan θ = Perpendicular/Base = 4/3
Sin θ = Perpendicular/Hypotenuse = AB/AC = ⅘
Cos θ = Base/Hypotenuse = BC/AC = ⅗
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Chapters
0:00 Introduction
0:17 Basic Concepts
2:31 Trick