Solve for the remaining angles and side of the one triangle that can be created. Round to the nearest hundredth:A=50°𝐴=50°, c=6𝑐=6, a=6.5
Question
Solve for the remaining angles and side of the one triangle that can be created. Round to the nearest hundredth:
- A = 50°
- c = 6
- a = 6.5
Solution
To solve for the remaining angles and side of the triangle, we can use the Law of Sines and the fact that the sum of the angles in a triangle is 180°.
Step 1: Use the Law of Sines to find angle C. The Law of Sines states that the ratio of the length of a side of a triangle to the sine of the angle opposite that side is the same for all three sides of the triangle. So, we have:
sin(C) / c = sin(A) / a
Substitute the given values:
sin(C) / 6 = sin(50°) / 6.5
Solve for sin(C):
sin(C) = (sin(50°) / 6.5) * 6
Use a calculator to find the value of sin(C):
sin(C) ≈ 0.782
Then, use the inverse sine function to find the measure of angle C:
C = sin^-1(0.782) ≈ 51.31°
Step 2: Use the fact that the sum of the angles in a triangle is 180° to find angle B.
B = 180° - A - C
Substitute the given values:
B = 180° - 50° - 51.31° ≈ 78.69°
Step 3: Use the Law of Sines again to find side b.
sin(B) / b = sin(A) / a
Substitute the given values:
sin(78.69°) / b = sin(50°) / 6.5
Solve for b:
b = (sin(78.69°) / sin(50°)) * 6.5
Use a calculator to find the value of b:
b ≈ 7.97
So, the remaining angles and side of the triangle are approximately C = 51.31°, B = 78.69°, and b = 7.97.
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