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यदि cos A = (24)/25 , तो निम्नलिखित क...

यदि ` cos A = (24)/25 , ` तो निम्नलिखित के मान ज्ञात कीजिए जबकि ` 0 lt A lt pi/2`
(i) `sin 2A` (ii) ` cos 2A`
(iii) `tan 2A`

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