Mathematics · Trigonometry
What is the value of cos 22.5°?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
Share:
- 1(√(1 + √2)) / 2
- 2(√(2 + √2)) / 2✓
- 3(√(2 − √2)) / 2
- 4(√(3 + √2)) / 2
Correct answer
(√(2 + √2)) / 2
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