Question

can u pls.solve it and send ​

Answer 1

Answer:

215 °

Step-by-step explanation:

we can split a to 2 i.e. 180° + x° because angle on a straight line is 180°

x is total angle of a triangle - (90°+55°)

180 - 90+55

180 -145

x = 35°

a = 180+x

= 180+35

a= 215°