Math, asked by ragamaligaayyanar, 9 months ago

1÷secs square-cos square+1÷cosec square-sin square×cos square =1-sin square×cos square÷2+sin×cos square. plsss answer​

Answers

Answered by VishnuPriya2801
27

Answer:-

1/Sec² ∅ - Cos² ∅ + 1/Cosec² ∅ - Sin² ∅ * Cos² ∅ = 1 - Sin² ∅ * Cos² ∅ /2 + Sin² ∅ * Cos² ∅

=> Cos² ∅ - Cos² ∅ + Sin² ∅ - Sin² ∅ * Cos² ∅ = Cos² ∅ * Cos² ∅/2 + Sin² ∅ * Cos² ∅

[ 1/Sec² = Cos² ; 1/Cosec² = Sin² ; 1 - Sin² = Cos² ]

=> 0 + Sin² ∅( 1 - Cos² ∅) = Cos⁴ ∅/2 + Sin² ∅ * Cos² ∅

=> Sin² ∅(Sin² ∅) = (Cos⁴ ∅ + 2 * Sin² ∅ * Cos² ∅)/2

[ 1 - Cos² = Sin² ]

=> Sin⁴ ∅ = (Cos⁴ + 2 * Sin² ∅ * Cos² ∅)/2

=> Sin⁴ ∅ - Cos⁴ ∅ = (2 * Sin² ∅ * Cos² ∅)/2

=> 2 (Sin⁴ ∅ - Cos⁴ ∅) - 2 * Sin² ∅ * Cos² ∅ = 0

=> Sin⁴ ∅ - Cos⁴ ∅ - 2 * Sin² ∅ * Cos² ∅ = 0

=> (Sin² ∅ - Cos² ∅)² = 0

=> Sin² ∅ - Cos² ∅ = 0

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