Question

Relasi sudut alhpa dgn 180% +alhpa dgn gambar

Answer 1

180⁰ = sudut pelurus
90⁰ = sudut penyiku

Answer 2

Mungkin maksudnya untuk sudut relasi trigono ya ...
sin(180 + α) = -sinα
cos(180 + α) = -cosα
tan(180 + α) = tanα
sec(180 + α) = -secα
cosec(180+α) = -cosecα
cotan(180+α) = cotanα