If in a triangle the side a and the angle A remain constant, while other elements are changed slightly then

In a right angled triangle, one acute angle is 30 ^@ find the other acute angle

If In two triangles, the sides of one triangle are proportional to the corresponding sides of the other triangle, then their corresponding angles are equal and hence the traingles are similar.

The approximate change in the total surface area of a right circular cone when the radius 'r' remains constant while altitude h changes by 'alpha' is

IF one angle of a triangle is equal to one angle of another triangle and the sides including these angles are proportional, the two triangles are similar. This property is……….

Explain with an example where "speed remains constant, but its velocity changes".

if 6,10,4 are the sides of a triangle then its obtus angle is

In a right angle triangle, one acute angles is 45^@ . Find the other acute angle.

In a right angled triangle one acute angle is 37^@ . Find the other acute angle.

Classify the following triangles according to their (i) sides and (ii) angles. (2) Write the six elements (i.e. the 3 sides and 3 angles) of Delta ABC . (3) Write the side opposite to vertex Q in Delta PQR . (4) Write the angle opposite to side bar(LM) in Delta LMN . (5) Write the vertex opposite to side bar(RT) in Delta RST . If we consider triangles in terms of both sides and angles we can have the following types of triangles: