Earth
Question : In a $\triangle \mathrm{XYZ}, \mathrm{XO}$ is the median and $\mathrm{XO}=\frac{1}{2} \mathrm{YZ}$. If $\angle \mathrm{YXO}=30^{\circ}$, then what is the value of $\angle \mathrm{XYZ}$?
Option 1: 15°
Option 2: 90°
Option 3: 30°
Option 4: 60°
Correct Answer: 30°
Solution :
Since $XO$ is the median, $YO = OZ = \frac{YZ}{2}$ Given $XO = \frac{YZ}{2}$, ⇒ $YO = XO$ ⇒ $\triangle XYO$ is an isosceles triangle. Given, $\angle YXO = 30°$ Since angles opposite to equal sides of an isosceles triangle are equal, ⇒ $\angle XYO = 30°$ ⇒ $\angle XYZ = 30°$ Hence, the correct answer is 30°.
They both basically belongs to the S-Block of the periodic table. Alkali metals are the 1st group elements and alkaline earth metals are 2nd group elements
Hi there. In response to your question the answer would be negative. Both of these branches are actually quite different which can be verified from the fact and brochure of a reputed institution offering both of these courses. The course pattern and subjects taught focus on different methodologies and hence it makes it different.
Hope this answer helps; best wishes
Hey there!
Hope you are doing great. The primitive surface of the earth is known as "Crust". Earth is divided into 4 layers. First one, is crust, it the outermost layer, where the landforms, air and water are covered. Second one is mantle, third goes the inner core and finally the deepest layer is the outer core.
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