Question

From the following information, prepare Somesh's Account, balance it and explan
does the closing balance indicate ?
2019
Jan. 1 Opening Balance (Dr.)
Jan. 10 Sold goods to him
Jan. 15 Received cash from him
Jan 20
He returned goods
Jan. 23 Purchased furniture from him
Jan. 29 Paid by cheque
₹
12,300
67,000
30,000
50,000
90.000
60.000​

Answer 1

Answer:

L.H.S. = x2 – y2

= (p sec θ + q tan θ)2 – (p tan θ + q sec θ)2

= p2 sec θ + q2 tan2 θ + 2 pq sec 2 tan 2 -(p2 tan2 θ + q2 sec2 θ + 2pq sec θ tan θ)

= p2 sec θ + 2 tan2 θ + 2pq sec θ tan θ – p2 tan2 θ – q2 sec θ – 2pq sec θ tan θ

= p2(sec2 θ – tan2 θ) – q2(sec?2 θ – tan2 θ) =

= p2 – q2 …[sec2 θ – tan2 θ = 1

= R.H.S.hii

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