How to know closing balance
asinθ- bcosθ=c and asinθ+bcosθ=√(a≤+b≤-c≤) prove that sinθ=cosθ or a≤=b≤
asinθ- bcosθ = c and asinθ+ bcosθ = √a≤ + b≤ - c≤ prove that cosθ =sinθor a≤ = b≤
Two equal circles intersect in P and Q. A straight line through P meets the circles in A and B. Prove that QA = QB