Question

cos-x+sinex
for reR then
If f(x)=cos
s

Answer 1

Answer:

1

Step-by-step explanation:

Given :- f(x) = cos²x + sin⁴x / sin²x+ cos⁴x

=> cos²x + sin²x * sin²x / sin²x + cos²x * cos²x

=> cos²x + sin²x (1-cos²x)/sin²x + cos²x ( 1-sin²x)

=> cos²x + sin²x - sin²x cos²x / sin²x+ cos²x - sin²xcos²x

=> 1 - sin²x * cos²x / 1-sin²xcos²x

=> 1

Since, f(2021) = 1.

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Hope it's helpful

Answer 2

Answer:

refer to this attachment ✅✅