Question

Daca n reprezintă măsura unui unghi ascuțit atunci :
a) sin la patrat n+ cos la patrat n=......
b) sin(90-n)=.....
c) ctg(90-n)=......
d) sin n supra cos n =......
e) cos n supra sin n=....
Ma ajuta si pe mine cineva ,va rog frumos ....​

Answer 1

 

$\displaystyle\bf\\a)~~~sin^2n+cos^2n=1\\\\b)~~~sin(90-n)=cos~n\\\\c)~~~ctg(90-n)=tg~n\\\\d)~~~\frac{sin~n}{cos~n}=tg~n\\\\\\e)~~~\frac{cos~n}{sin~n}=ctg~n$