Question

sin²(180°+a)
HELP MEEEEE

Answer 1

${(sin(180 + alpha )})^{2} = {(sin alpha )}^{2}$


ОТВЕТ: sin^2(a)

Answer 2

Не сможете помочь с полным примером? tg²(270°+a)•sin²(180°+a)

Answer 3

ctg^2(a) • sin^2(a) = cos^2(a) / sin^2(a) • sin^2(a) = cos^2(a)