Cos? 0Ifcot2 0-cos203 and 0° < < 90°then the value of 0 is:
1 answer:
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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