Question

=> this sign stand for

Answer 1

Answer:

=> this sign stand for that implies.

Answer 2

Answer:It is borrowed from computer programming: it means that the item on the left hand side is being defined to be what is on the right hand side. For example, y:=7x+2. means that y is defined to be 7x+2. This is different from, say, writing 1=sin2(θ)+cos2(θ)

< ' and ' > ' are called angle brackets and ' { ' and ' } ' are normally called curly brackets. With all types of brackets, the first bracket is called 'open' and the second bracket is called 'close'. So, for example, ' < ' is called 'open angle bracket' and ' ] ' is called 'close square bracket'.

this sign indicates the arrow to right