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These 11th Class math exercise 13.2 notes prepared according to the syllabus of all Punjab Boards. Other boards other than Punjab do not follow 1st year math notes. These Punjab boards are Gujranwala Board, Lahore Board, Faisalabad Board, Multan Board, Rawalpindi Board, Bahawalpur Board Sargodha Board, DG Khan Board, Sahiwal Board.
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Assalam o alaikum!
Sorry sir but question no 5 is wrong because in last when we shift the sin on the other side then is becomes sin inverse but the value pi by 4 comes when we multiply sin with one by under root 2 not sine inverse with it!
Exactly that was the fault