Mathematics · Trigonometry

If A, B, and C are acute angles and sin(B + C - A) = cos(C + A - B) = tan(A + B - C) = 1, then what is the value of (A + B + C)?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

190°
2120°
3135°✓
4150°

Correct answer

135°

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If A, B, and C are acute angles and sin(B + C - A) = cos(C + A - B) = tan(A + B - C) = 1, then what is the value of (A + B + C)?

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If A, B, and C are acute angles and sin(B + C - A) = cos(C + A - B) = tan(A + B - C) = 1, then what is the value of (A + B + C)?

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