Sin 45° - Cos 45° + 2 Cos 0°
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Answer:
sin 45° = 1/ underoot 2
cos 45° = 1/ underoot 2
2cos 0°= 2×1
1/ underoot 2 - 1/ underoot 2+2
(plus and minus 1/ underoot 2 cancel and +2 left)
=2
therefore, 2 answer
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