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CBSE Class 12-commerce Answered

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Asked by felixlukose | 16 May, 2019, 03:02: PM
answered-by-expert Expert Answer
G i v e n colon space open vertical bar table row 3 cell negative 2 end cell cell sin 3 theta end cell row cell negative 7 end cell 8 cell cos 2 theta end cell row cell negative 11 end cell 14 2 end table close vertical bar equals 0
rightwards double arrow 3 open parentheses 16 minus 14 space cos 2 theta close parentheses plus 2 open parentheses negative 14 plus 11 cos 2 theta close parentheses plus sin 3 theta open parentheses negative 98 plus 88 close parentheses equals 0
rightwards double arrow 48 minus 42 space cos 2 theta minus 28 plus 22 cos 2 theta minus 10 space sin 3 theta equals 0
rightwards double arrow 2 space cos 2 theta space plus space sin 3 theta minus 2 equals 0
rightwards double arrow 2 left parenthesis cos 2 theta minus 1 right parenthesis plus 3 sin theta minus 4 sin cubed theta equals 0
rightwards double arrow negative 4 sin squared theta plus 3 sin theta minus 4 sin cubed theta equals 0
rightwards double arrow 4 sin squared theta plus 4 sin theta minus 3 equals 0
rightwards double arrow left parenthesis 2 sin theta minus 1 right parenthesis left parenthesis 2 sin theta plus 3 right parenthesis equals 0
rightwards double arrow sin theta equals 1 half space o r space sin theta equals negative 3 over 2
B u t space minus 1 space less or equal than sin theta less or equal than 1
rightwards double arrow sin theta equals 1 half
rightwards double arrow theta equals straight pi over 6
Answered by Renu Varma | 16 May, 2019, 05:05: PM
CBSE 12-commerce - Maths
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Asked by pathvipatel144 | 25 Feb, 2024, 09:37: PM
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Asked by nainaadityathakur | 06 Feb, 2024, 01:38: PM
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Asked by najakatkhan6698 | 25 Dec, 2023, 10:37: AM
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Asked by darshanasharma0409 | 21 Sep, 2023, 06:07: PM
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Asked by routdebasmita900 | 13 Aug, 2023, 10:43: AM
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Asked by grdsagar97 | 03 Jun, 2023, 11:07: AM
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