Cos square 45°- sin square 15°
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Hey!!!
____________
Let's solve
=> cos²45° - sin²45°
We know
=> sin45 = cos45 = 1/√2
Thus
=> sin²45 = cos²45 = 1/2
=> 1/2 - 1/2
=> 0 <<<<<<<Answer
______________
Hope this helps ✌️
Good Night :-)
____________
Let's solve
=> cos²45° - sin²45°
We know
=> sin45 = cos45 = 1/√2
Thus
=> sin²45 = cos²45 = 1/2
=> 1/2 - 1/2
=> 0 <<<<<<<Answer
______________
Hope this helps ✌️
Good Night :-)
samsung8955:
sin square 15 not 45
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