class 10: Trigonometery|Trigonometric Identities| Example: 12,13,14,15|Malayalm

Описание к видео class 10: Trigonometery|Trigonometric Identities| Example: 12,13,14,15|Malayalm

Hi everyone 🙂
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class 10 maths
ncert, cbse
Chapter 8:INTRODUCTION TO TRIGONOMETERY
trigonometeric Identities
Example 12 : Express the ratios cos A, tan A and sec A in terms of sin A.
Example 13 : Prove that sec A (1 – sin A)(sec A + tan A) = 1.
Example 14 : Prove that cot A – cos A/cot A + cos A= cosec A - 1/ cosea+1
Example 15 : Prove that sinθ-cosθ+1/sinθ+cosθ-1= tanθ-1+secθ/tanθ+1-secθ

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