Cotan^2 x per 1 + cosec x = A. Cosec x B. Sec x C. Cosec x - 1 D. 1 + sec x E. Cotan x
Matematika
frnndgw
Pertanyaan
Cotan^2 x per 1 + cosec x =
A. Cosec x
B. Sec x
C. Cosec x - 1
D. 1 + sec x
E. Cotan x
A. Cosec x
B. Sec x
C. Cosec x - 1
D. 1 + sec x
E. Cotan x
1 Jawaban
-
1. Jawaban idznizhahrina
cotan²x/(1+cosec x)
=cosec² x -1/(1+cosec x)
=(cosec x + 1)(cosec x -1)/(1+cosec x)
=cosec x - 1