Question

Please help me in this​

Answer 1

Answer:

<BAC=45DEGREE

AB=BC=2 AND IN THE LAST BOX ITS =4*(2)^1/2=(32)^1/2

Step-by-step explanation:

AB^2+BC^2={(8)^1/2}^2=8

=>2AB^2=8      [AB=BC]

=>AB^2=4

=>AB =4

THUS AB=BC=4

AND SINCE THE OPPOSITE SIDES OF THE TRIANGLE ABC (i.e. AB & BC) ARE  EQUAL SO <BAC=<ACB=45 DEGREE SO THAT

<ABD+<BAC+<ACB+180 DEGREE    [<ABC=90 DEGREE, FROM THE FIG.]