Упростить выражение:
1) sin^2a+cos^2a+ctg^2a
2) (sin^2a - 1) / (1-cos^2a)
3) (cos a sin B) / (sin a cos a)
More Questions From This User See All
Упростить выражение:
1) sin^2a+cos^2a+ctg^2a
2) (sin^2a - 1) / (1-cos^2a)
3) (cos a sin B) / (sin a cos a)
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
2) (sin^2a - 1) / (1-cos^2a)=-cos²a/sin²a=-ctg²f
3) (cos a sin B) / (sin a cos a)=sin b/sin a
Verified answer
Решениеееееееееееееееее