[img]2022m10x/ct_ve01204002j_0034_221018[/img]In the figure above，PQ is a diame

游客2025-02-27 42

问题

In the figure above，PQ is a diameter of circle O，PR=SQ，and △RST is equilateral．If the length of PQ is 2．what is the length of RT?

选项 A、
B、
C、
D、
E、

答案 D

解析 Since PR = SQ it follows that RO = OS, so O is the midpoint of RS. Since △RST is equilateral and 0 is the midpoint of

, △ROT is a 30°-60°-90° triangle, and since

is a radius of the circle with diameter 2, OT= 1. Using the ratios of the sides of a 30°-60°-90° triangle, it follows that RT=

.
The correct answer is D.

转载请注明原文地址:http://tihaiku.com/zcyy/3974646.html

相关试题推荐

随机试题

最新回复(0)

[img]2022m10x/ct_ve01204002j_0040_221018[/img]AfactoryassemblesProductXfro