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Evaluate : - (i.) sin75° and …

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Evaluate : - (i.) sin75° and (ii.) tan15°
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Muktinath Pandey 5 years, 8 months ago

i. Sin (30+45)=sin30cos45+cos30sin45 =1/2×1/√2 + √3/2×1/√2=1/2√2 + √3/2√2 =(1+√3)/2√2=(√2+√6)/4
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