What is 2 sin 60 cos 90 + cos 30 2 sin 90? - Quora

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What is 2 sin 60 cos 90 + cos 30 2 sin 90? - Quora

How to find an approximate value for sin x if it's an extremely large angle (like 90 degrees) - Quora

How to answer this type of question in details? : r/ACT

left[ begin{array} { c c } { 2 cos 60 ^ { circ } } & { - 2 sin 30

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sin 30^@ -sin90^@ + 2cos0^@)/(tan 30^@ tan 60^@)`

How to solve the equation cos (x+20) - cos (x+80) =0.5 - Quora

cos 60 = ) ( cos 90 = ) ( 1 + tan ^ { 2 } 30 ) ( 4 cos ^ { 3 } 30

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