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Triangle ABC has the following angle measures: m∠a = (2x − 24)°, m∠b = (x − 8)°, m∠c = (4x + 49)°. What is m∠a?

a. 18°

b. 21°

c. 29°

d. 133°

User Danactive
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1 Answer

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Final answer:

To find the measure of angle A, we can use the fact that the sum of the angles in a triangle is 180 degrees. By setting up an equation and solving for x, we can find the value of angle A.

Step-by-step explanation:

To find the measure of angle A, we can use the fact that the sum of the angles in a triangle is 180 degrees. So, we have the equation (2x - 24) + (x - 8) + (4x + 49) = 180. We can solve for x by combining like terms and then solve for angle A by substituting the value of x back into the expression for angle A.

Simplifying the equation gives 7x + 17 = 180. Subtracting 17 from both sides gives 7x = 163. Dividing both sides by 7 gives x = 23. Substituting x = 23 into the expression for angle A gives angle A = (2*23 - 24) = 22 degrees.

User Gogi Bobina
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