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If `tantheta =-4/3," then " sintheta` isA. `-4/5" but not "4/5`B. `-4/5or4/5`C. `4/5" but not "-4/5`D. None of these |
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Answer» Correct Answer - B `tantheta=(-4)/3` `rArr theta in2nd` quadrant or 4th eqyadrant `rArr sintheta =pm4//5` If `theta in 2nd` equadrant, `sintheta=4//5` If `theta` in 4th quadrant, `sintheta=-4//5` |
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