Question

Write each of the following as a trigonometry ratio of positive acute angles. (a) sin(-194°) (b) cos 481° (c) tan 185° (d) sin 331° Write each of the following as a trigonometry ratio of positive acute angles . ( a ) sin ( -194 ° ) ( b ) cos 481 ° ( c ) tan 185 ° ( d ) sin 331 °​

Answer 1

(a)
`\sin(-194^(\circ))=-\sin 194^(\circ)=-(-\sin 14^(\circ))=\sin 14^(\circ)`

(b)
`\cos 481^(\circ)=\cos 121^(\circ)=-\cos 59^(\circ)`

(c)
`\tan 185^(\circ)=\tan 5^(\circ)`

(d)
`\sin 331^(\circ)=\sin(-29^(\circ))=-\sin 29^(\circ)`