Question

what is the meaning of 90D in a RA​

Answer 1

Answer:

90 D in a R A => 90 degrees in a Right Angle.

This is similar to. 26 L of the A = 26 Letters of the alphabet:

Answer 2

Answer:

90 D in a R A => 90 degrees in a Right Angle.

This is similar to. 26 L of the A = 26 Letters of the Alphabet.