Question

(Sin⁴∅ + cos⁴∅)/(1-2sin²∅Cos²∅)=1

Answer 1

Answer:

Sin⁴∅ - cos⁴∅ = 1

(sin²∅ - cos²∅ )( sin²∅+ cos²∅ ) = 1

we know that ,

sin²∅ + cos²∅ = 1

so,

(sin²∅ - cos²∅).1 = 1 form above eqn

sin²∅ - cos²∅ = 1

sin²∅ -(1-sin²∅ ) = 1

2sin²∅ = 2

sin²∅ = 1

so, 1/cosec²∅ = 1

cosec² ∅ = 1

here some typing mistake

I think questions is

sin⁴∅ - cos⁴∅ = 1

then ,prove that cosec²∅ = 1

plz mention clearly , what you want

Step-by-step explanation:

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