Maths-
General
Easy
Question
If
then A2 ![equals](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABEAAAAJCAYAAADU6McMAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAABGJhU0UAAAAIzv8arAAAABZJREFUeNpjYMAE/4nAQwgMM+8MYQAAvYER7yMcYioAAABJdEVYdE1hdGhNTAA8bWF0aCB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMTk5OC9NYXRoL01hdGhNTCI+PG1vPj08L21vPjwvbWF0aD4wTGvlAAAAAElFTkSuQmCC)
Hint:
Recall the method of multiplying 2x2 matrices and the value of imaginary number.
The correct answer is: ![open curly brackets table attributes columnalign left end attributes row cell negative 1 end cell 0 row 0 cell negative 1 end cell end table close curly brackets](data:image/png;base64,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)
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In ![straight triangle A B C text , if end text c squared equals a squared plus b squared comma 2 s equals a plus b plus c text then end text 4 s left parenthesis s minus a right parenthesis left parenthesis s minus b right parenthesis left parenthesis s minus c right parenthesis equals](data:image/png;base64,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)
In ![straight triangle A B C text , if end text c squared equals a squared plus b squared comma 2 s equals a plus b plus c text then end text 4 s left parenthesis s minus a right parenthesis left parenthesis s minus b right parenthesis left parenthesis s minus c right parenthesis equals](data:image/png;base64,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)
Maths-General
Maths-
Maths-General
Maths-
If tan
then the
is
If tan
then the
is
Maths-General
Maths-
Maths-General
Maths-
Maths-General
Maths-
Maths-General