" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
1+tan²α - (1+cot²α) =
tan²α - cot²α =
(tanα + cotα) (tanα - cotα)
((senα/cosα) + (cosα/senα)) (tanα-cotα)
( (sen²α + cos²α)/(senαcosα) ) (tanα - cotα)
1/senα cosα (tanα -cotα)
(tanα - cotα) / senα cosα
13)
tanα
------- - secα = 0
senα
senα
-------
cosα
---------- - secα = 0
senα
1
------- - secα = 0
cosα
secα - secα = 0
0 = 0