1.Find the gradient of a line which is perpendicular to equation 2x+3y+7=0
2. If a^2+b^2=7
And aCos€-bSin€=1
Find aSin€+acos€
3. The inradius of an equilateral triangle is √3, find the perimeter
4.Three 3-digit numbers 6P4,Q67,57R are added to get 2196.then the 3 digit numbers RPQ are _ _ _?
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Asked by Emzy Reid on 16th September, 2020
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