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Which of the following statements is wrong ?
(a) sin2? + cos2? = 1
(b) 1 + tan2? = sec2?
(c) sin2? - cos2? = 1
(d) sin2? = 2 sin? cos?
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Answer Posted / chief
( c ) sin2? - cos2? = 1
| Is This Answer Correct ? | 50 Yes | 15 No |
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