Question

if cosA + cos²A=1find the value of sin²A+sin⁴A​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

cosA + cos²A = 1 ————(1)

cosA = 1 - cos²A

[sin²A = 1 - cos²A]

cosA= sin²A ———-(2)

Substitute value of cos A in Eqn. (1)

(sin²A) + (sin²A)² = 1

sin²A + sin⁴A = 1

Hence , Proved.

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