Question

sin^4 α + cos^4 α = 1 + 4k sin^2 α + cos^2 α​

Answer 1

Answer:

Step-by-step explanation:

/* By algebraic identity:

i )a²+b² = (a+b)²-2ab

By Trigonometric identity:

ii) sin²A+cos²A = 1 */

Therefore,

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