Question

$\sin(90) + \cos(45 ) =$
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Answer 1

Answer:

you know that sin 90 is 1 and cos 45 is 1/√2

so,

$sin90 + cos45 \\ = 1 + \frac{1}{ \sqrt{2} } \\ = \frac{ \sqrt{2} + 1 }{2}$