Question

Rcos theta=7/13 r sin theta =7/3 find the value of theta and r

Answer 1

Answer:

r = (7√2)/3                             ;     Ф = 45°

Step-by-step explanation:

let we consider theta be Ф

∴ r cosФ/r sinФ = (7×3)/(3×7) = 1

or,        cotФ      =    1  = cot 45°

∴theta = Ф = 45°

    r sin 45°  =  7/3

or,       r        =  (7√2)/3