11th Grade Maths
posted by Akash on .
The difference between the two acute angles of a right angled triangle is 2 π/5 radians. Express the angles in degrees.
I’ve multipled 2 π/5 * 180/ π and got the result 72 degree But the answer is 81 degree and 9 degree. Please explain me!!!

I'm waiting for my answer

They ask for two angles. Their sum is 90 degrees and their difference is 2 pi/5 radians or 72 degrees.
All you did was convert the difference to degrees. You did that right, but that was not the question.
A + B = 90
A  B = 72
2A = 162
A = 81
B = 90  81 = 9 
Thank You but i did before you anyways thx