What is the length of the side opposite the 90-degree angle? A. 5√3 meters B. 10 meters C. 5√2 meters D. 8 meters 相关知识点: 试题来源: 解析 B。解析:在30度、60度、90度的直角三角形中,30度角所对的边是斜边的一半,已知30度角所对边是5米,所以斜边是10米。本题考查数学中特殊...
(of a plant ovule) completely inverted; turned back 180 degrees on its stalk Opposite (botany) Of leaves and flowers, positioned directly across from each other on a stem. Opposite Facing in the other direction. They were moving in opposite directions. Opposite Extremely different; inconsistent;...
Optical and atomic-force microscopy analyses are performed on revealing lamellae assembly in highly dendritic PEO spherulites by crystallizing PEO/PVPh (80/20) at crystallization temperature (T-c) equals to 45 degrees C. The lamellae of two opposite colors in the same PEO sp...
If the exterior angle of a triangle is 120 degrees and one of the interior opposite angles is 50 degrees, what is the measure of the other interior opposite angle? A. 50 degrees B. 60 degrees C. 70 degrees D. 80 degrees 相关知识点: 试题来源: 解析 C。三角形的一个外角等于与它不...
abut since the rotor is composed of alternating North and South poles, the current produced flows in the opposite direction every 180 degrees of rotation. 但,因为电动子由交替南北极组成,当前导致的流程在相反方向每180个程度自转。[translate]
aAs the pole fields pass through the stator, current is electromagnetically produced, but since the rotor is composed of alternating North and South poles, the current produced flows in the opposite direction every 180 degrees of rotation. In other words, the current is “alternating”. 当杆领域...
In both regions, there tend to be more MHWs in the suppressed convection phases of MJO. In response to increasing greenhouse gases, extreme El Niño and La Niña events are projected to increase45,46,47. MJOs are also projected to be more active under global warming48, 49. Thus, ...
From the top of a cliff, the angle of depression of the top and bottom of a tower are observed to be45∘and60∘respectively. If the height of the tower is 20 m. Find : (i) the height of the cliff (ii) the distance between the cliff and the tower. ...
If Q is a quadrilateral, is Q a rectangle? (1) Opposite sides of Q are parallel. (2) One of the four angles of Q is 90 degrees. 选项: A、Aif statement (1) ALONE is sufficient to answer the question but statement (2) alone is not sufficient;...
aIt is impossible for an observer to manoeuvre to see any rainbow from water droplets at any angle other than the customary one (which is 42 degrees from the direction opposite the Sun). Even if an observer sees another observer who seems "under" or "at the end" of a rainbow, the ...