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9 February, 20:04

What is the value of x? sin55°=cosx

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  1. 9 February, 20:29
    0
    It should end up like this.
  2. 9 February, 20:32
    0
    Well from identities we know that sina=cos (90-a), in this case 90-55=35. But if we didn't know this we could also say:

    cosx=sin55

    x=arcos (sin55)) = 35
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