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In ΔGHI, h = 510 inches, ∠G = 25°, and ∠H = 122°. Find the length of g, to the nearest inch.

a) 502 inches
b) 510 inches
c) 872 inches

2 Answers

7 votes

Answer:

To find the length of side \( g \) in triangle \( GHI \), you can use the Law of Sines. The Law of Sines states:

\[ \frac{a}{\sin A} = \frac{b}{\sin B} = \frac{c}{\sin C} \]

where \( a, b, c \) are the side lengths opposite to angles \( A, B, C \) respectively.

In this case, let \( g \) be the side length opposite to angle \( G \), \( h \) opposite to angle \( H \), and \( i \) opposite to angle \( I \).

\[ \frac{g}{\sin G} = \frac{h}{\sin H} \]

Given that \( h = 510 \) inches, \( G = 25° \), and \( H = 122° \), substitute these values into the equation:

\[ \frac{g}{\sin(25°)} = \frac{510}{\sin(122°)} \]

Now, solve for \( g \):

\[ g = \frac{510 \cdot \sin(25°)}{\sin(122°)} \]

Calculate this expression to find the length of \( g \). The nearest inch will be the answer.

After evaluating, if none of the provided options match exactly, choose the option that is closest to the calculated length of \( g \).

User Eczn
by
7.2k points
3 votes

Final answer:

To find the length of g in triangle ΔGHI, we can use the Law of Sines.

Step-by-step explanation:

To find the length of g in triangle ΔGHI, we can use the Law of Sines. The Law of Sines states that the ratio of the length of a side of a triangle to the sine of its opposite angle is constant. In this case, we have:

sin(G)/g = sin(H)/h

Plugging in the given values, we have:

sin(25°)/g = sin(122°)/510 inches

Solving for g, we get g ≈ 502 inches (to the nearest inch).

User Aveevu
by
8.3k points