r/-3 + 4 =-5
(1.30 *10E+09) * (0.5*10^-9) * C = 0.6
tanA +CotA=SecA×CosecA
r/-3r + 4 =-5
tanA +CotA=SecA×
2p − 10.8 = 3.2
4(b + 1) = 20
r/3 + 2 = 15
12.5 = w/3 + 9.5
h + 1.75/3 = 2.15