Answer:
It seems you are talking about a right-angled triangle. And one of the angles of the right-angled triangle is equal to 30 degrees. Hence, the third angle is certainly going to be 180 - 90- 30= 60 degrees. And and sides will be equal to if perpendicular is a then the hypotenuse ( Sin 30= Perpendicular/ hypotenuse => 1/2=a/hypotenuse => hypotenuse = 2a. And hence base = sqrt((2a)*2 - a*2) = a sqrt(3) ( by Pythagoras theorem). And these are shown in the image attached.
Step-by-step explanation:
Please check the answer section.