Question

in right angle at angelc and angelb =45 .find angela

Answer 1

angle c=90

angle b=45

angle a=?

we know that,

a+b+c=180
a+45+90=180
a+135=180
a=180-135
a=45


hence angle a is 45

Answer 2

Given that angleC=90 degree
And angleB=45 degree
As we know that the sum of all angles of a triangle equal to 180 degree
So,
angles(A+B+C)=180 degree
Then, angleA+90+45=180
angleA=180-90-45
angleA=45
So the angle we find A=45 degree

Hope it will help you