Vocabulary consisting only from characters you are able to read
主な
omona
chief, main, principal, importantmix
切線
sessen
tangent (in trigonometry)mix
手にする
tenisuru
(1)to hold (in one's hand), to take (into one's hand), (2)to own, to obtain suru
足りる
tariru
(1)to be sufficient/to be enough/ (2)to be worth doing/to be worthy/ (3)to be sufficient/to answer/to do/(P) ichidan, jlpt3, verb, vintrans