Given-A-sin-2-cos-4-then-for-all-real-

Question Number 45829 by jashim last updated on 17/Oct/18

Given A = \sin^{2} θ + \cos^{4} θ, then for all

real θ

Commented by MJS last updated on 17/Oct/18

this {isn}^{'} t a clear question .

another possible answer is

A = \sin^{2} θ + \cos^{4} θ \land θ \in R \Rightarrow A ⩾ 0

Commented by MJS last updated on 17/Oct/18

A = \frac{7}{8} + \frac{1}{8} \cos 4 θ

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