Question

Find the value of
$cos ^245 + 2 sin^2 30$​

Answer 1

Step-by-step explanation:

${ \cos}^{2} 45 = ( { \frac{1}{ \sqrt{2} }) }^{2} = \frac{1}{2} \\ 2 { \sin}^{2} 30 =2 ( \frac{ 1}{2} {)}^{2} = 2 \times \frac{1}{4} = \frac{1}{2} \\ = > \: \: \: \frac{1}{2} + \frac{1}{2} = 1$

Answer 2

Answer:

1 is your answer

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