Subjects trigonometry

Triangle Acute Angle C1Ef7E

Step-by-step solutions with LaTeX - clean, fast, and student-friendly.

Use the AI math solver

1. **State the problem:** We have a right triangle where \(\sin(7x+2)^\circ = \cos(6x-3)^\circ\). We need to find the larger of the two acute angles. 2. **Recall the identity:** For any angle \(\theta\), \(\sin \theta = \cos(90^\circ - \theta)\). 3. **Apply the identity:** Since \(\sin(7x+2)^\circ = \cos(6x-3)^\circ\), it implies: $$7x + 2 = 90 - (6x - 3)$$ 4. **Solve the equation:** $$7x + 2 = 90 - 6x + 3$$ $$7x + 2 = 93 - 6x$$ Add \(6x\) to both sides: $$7x + 6x + 2 = 93$$ $$13x + 2 = 93$$ Subtract 2 from both sides: $$13x = 91$$ Divide both sides by 13: $$x = \frac{91}{13}$$ 5. **Calculate the angles:** \(7x + 2 = 7 \times \frac{91}{13} + 2 = \frac{637}{13} + 2 = \frac{637}{13} + \frac{26}{13} = \frac{663}{13} \approx 51\) degrees \(6x - 3 = 6 \times \frac{91}{13} - 3 = \frac{546}{13} - 3 = \frac{546}{13} - \frac{39}{13} = \frac{507}{13} \approx 39\) degrees 6. **Identify the larger acute angle:** The two acute angles are approximately 51 degrees and 39 degrees. The larger is \(51^\circ\). **Final answer:** The larger acute angle is \(51^\circ\).