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Computer sin 75^(@) , cos 75^(@) and tan...

Computer `sin 75^(@) , cos 75^(@) and tan 15 ^(@),` from the functions of `30^(@) and 45 ^(@)`

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`(sqrt(3)-1)/(2sqrt(2))`
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AAKASH INSTITUTE ENGLISH-TRIGNOMETRIC FUNCTIONS -Try Yourself
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