Упростите выражение:
1) (1-sin a)(1+sin a) / sin2 a
2) sin a cos a / cos2 a
3) tg a / sin a
1) (1-sin a)(1+sin a) / sin2 a
2) sin a cos a / cos2 a
3) tg a / sin a
More Questions From This User See All
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Объяснение:
(1-sin^2 a) /sin2 a=cos2 a/ sin2 a=1/ tg2 a
sin a/ cos a= tg a
sin a / (cos a * sin a) = 1/ cos a
Ответ:
.................................