035) COSP= P&o are achte angle P-Q=...
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035) COSP= P&o are achte angle P-Q=? 675 30 BX 60 10 47 i sinpa JY 8 eu

JEE/Engineering Exams
Maths
Solution
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( cos P=frac{1}{7}, cos Q=frac{13}{14} mid sin ^{2} alpha alpha ) ( cos (P-Q)=cos P cos theta+sin P sin theta ) ( rightarrow frac{1}{7} times frac{13}{14}+frac{sqrt{48} times 27}{7 times 14} ) ( cos (p-a) frac{36+13}{98}=frac{49}{982} ) ( P-Q=60 )
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