SOLUTION: Use an Addition or Subtraction Formula to write the expression as a trigonometric function of one number.
cos 14° cos 46° − sin 14° sin 46°
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-> SOLUTION: Use an Addition or Subtraction Formula to write the expression as a trigonometric function of one number.
cos 14° cos 46° − sin 14° sin 46°
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Question 664787: Use an Addition or Subtraction Formula to write the expression as a trigonometric function of one number.
cos 14° cos 46° − sin 14° sin 46° Answer by lwsshak3(11628) (Show Source):
You can put this solution on YOUR website! Use an Addition or Subtraction Formula to write the expression as a trigonometric function of one number. cos 14° cos 46° − sin 14° sin 46°
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Identity: cos s cos t-sin s sin t=cos(s+t)
cos 14° cos 46°−sin 14° sin 46°
=cos (14º+46º)
=cos (60º)
=1/2
(