Question

In rhombus, find angle c
75
answer​

Answer 1

we know that,

<A=<B-30°--------(1)

<A+<B=180°--------(2)

substitute <A in equation( 2)

<B-30°+<B= 180°

2<B=180°+30°

<B=210°/2

<B=105°

<A=75°