Mathematics · Trigonometry

If A, B, and C are interior angles of a triangle and sin( B + C 2 ) = cos(x), then x is:

Verified Solution4 OptionsUpdated: October 2026👁️1 View

13A 2
2-A
3A 2✓
4A

Correct answer

A 2

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If A, B, and C are interior angles of a triangle and sin( B + C 2 ) = cos(x), then x is:

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If A, B, and C are interior angles of a triangle and sin( B + C 2 ) = cos(x), then x is:

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