QUESTION IMAGE
Question
solve the right triangle.
h
√26
i
34°
g
write your answers as integers or as decimals rounded to the nearest tenth.
gh =
gi =
m∠h = °
Step1: 求∠H的度数
因为三角形内角和为\(180^\circ\),直角三角形\( \angle I = 90^\circ\),\( \angle G = 34^\circ\),所以\( \angle H=180^\circ - 90^\circ - 34^\circ = 56^\circ\)。
Step2: 求\(GH\)的长度
在\(Rt\triangle IGH\)中,\(\sin G=\frac{IH}{GH}\),已知\(IH = \sqrt{26}\),\(\angle G = 34^\circ\),则\(GH=\frac{IH}{\sin G}=\frac{\sqrt{26}}{\sin34^\circ}\)。
计算\(\sin34^\circ\approx0.5592\),\(\sqrt{26}\approx5.1\),所以\(GH\approx\frac{5.1}{0.5592}\approx9.1\)。
Step3: 求\(GI\)的长度
在\(Rt\triangle IGH\)中,\(\tan G=\frac{IH}{GI}\),则\(GI=\frac{IH}{\tan G}=\frac{\sqrt{26}}{\tan34^\circ}\)。
计算\(\tan34^\circ\approx0.6745\),所以\(GI\approx\frac{5.1}{0.6745}\approx7.6\)。
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\(GH\approx9.1\);\(GI\approx7.6\);\(m\angle H = 56^\circ\)