sheetalbagul018 sheetalbagul018

Today at 3:09 PM
Mathematics

Answered

cos? 0
If
cot2 0-cos20
3 and 0° < < 90°
then the value of 0 is:

Answer :

sidhu36 sidhu36

Today at 3:14 PM

Step-by-step explanation:

NSWER

From the above equation, we get

cosθ=sinθ

Hence

θ=450

Therefore

sin4θ+cos4θ

=sin4450+cos4450

=2×(21)4

=2×41

=21

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