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यदि `sin theta =(4)/(5)`, तो निम्नलिखित के मान ज्ञात कीजिए । `sin 2 theta` यहाँ `theta` एक न्यूनकोण है । |
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Answer» दिया है - `" "sin theta = (4)/(5)` इसलिए `" "cos theta=sqrt(1-sin^(2)theta)=sqrt(1-((4)/(5))^(2))=sqrt(1-(16)/(25))=(3)/(5)` और `" "tan theta =(sin theta)/(cos theta)=(4//5)/(3//5)=(4)/(3)` `sin 2 theta =(sin theta)/(cos theta)=(4//5)/(3//5)=(4)/(3)` `=2xx(4)/(5)xx(3)/(5)=(24)/(25)` |
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