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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता ११ वी

Eliminate θ from the following : x = 6cosecθ , y = 8cotθ

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प्रश्न

Eliminate θ from the following : 

x = 6cosecθ, y = 8cotθ

बेरीज
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उत्तर

x = 6cosecθ and y = 8cotθ

∴ cosecθ = `x/6 and cot theta = y/8`

We know that,

∴ cosec2θ – cot2θ = 1 

`(x/6)^2 - (y/8)^2` = 1

∴ `x^2/36 - y^2/64` = 1

∴ `(64x^2 - 36y^2)/(36 xx 64)` = 1

∴ `(64x^2 - 36y^2)/2304` = 1

∴ 64x2 – 36y2 = 2304

Divided by 4

∴ 16x2 – 9y2 = 576

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पाठ 2: Trigonometry - 1 - EXERCISE 2.2 [पृष्ठ ३१]

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