Come trovo il valore di csc330?
Risposta:
#csc330^@=-2#
Spiegazione:
#"using the "color(blue)"trigonometric identity"#
#•color(white)(x)cscx=1/sinx#
#rArrcsc330^@=1/sin330^@#
#sin330^@=-sin(360-330)^@=-sin30^@=-1/2#
#rArrcsc330^@=1/(-1/2)=-2#
#csc330^@=-2#
#"using the "color(blue)"trigonometric identity"#
#•color(white)(x)cscx=1/sinx#
#rArrcsc330^@=1/sin330^@#
#sin330^@=-sin(360-330)^@=-sin30^@=-1/2#
#rArrcsc330^@=1/(-1/2)=-2#