trigonometry find the value of cos 375°
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Answer:
(√3-1)/2√2)
Step-by-step explanation:
cos 375°
=cos(360°+15°)
=cos 15°
=cos(45°-30°)
=cos 45°cos 30° - sin 45°sin 30°
=1/√2×√3/2 - 1/√2×1/2
=√3/2√2-1/2√2
=(√3-1)/2√2
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