Question

cos 45 digree ×cos 30 digree+sin 45 digree ×sin 30 digree = 1/ under root3×under root 3/2+1/ underoot 2×1/2? please help me in this question ​

Answer 1

Answer:

$\cos(45) \times \cos(30) + \sin(45) \times \sin(30) \\ \\ \cos(45) = \frac{1}{ \sqrt{2} } \\ \cos(30) = \ \frac{ \sqrt{3} }{2} \\ \sin(45) = \frac{1}{ \sqrt{2} } \\ \sin(30) = \frac{1}{2} \\ \\ now. \\ \: \: \: \: \: \: \: (\frac{1}{ \sqrt{2} } \times \frac{ \sqrt{3} }{2}) + (\frac{1}{ \sqrt{2} } \times \frac{1}{2}) \\ \: \: \: \: \: \: \: \: \: \frac{ \sqrt{3} }{2 \sqrt{2} } + \frac{1}{2 \sqrt{2} } \\ lcm \: of \: both \: are \: same \: so \: . \\ \: \: \: \: \: \: \frac{ \sqrt{3} + 1}{2 \sqrt{2} } \: is \: the \: answer.$

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Answer 2

23 they are not going to be... 744,44.



please mark me as brinliest dear .