Hint $a ^ { 2 } = b ^ { 2 } + c ^ { 2 }$

Short Answer

Hint: $a ^ { 2 } = b ^ { 2 } + c ^ { 2 }$ In the circuit shown $E _ { C }$ is 135 volts and $E _b$ is 175 volts. Find $E _ { a }$ . Carry the answer to two decimal places.