Tan(x)= sin(x)/cos(x), therefore, substitute sin(x)/cos(x) in the expression:
=(cos(x)(sin(x)/cos(x))-1)/cos^2(x)
simplify the 2 cos(x):
=(sin(x)-1)/cos^2(x)
Sin^2(x)+ cos^2(x)=1, sin^2(x)-1=- cos^2(x), substitute in the expression:
= -cos^2(x)/cos^2(x)= -1
Answer:
5969593829191937373
Step-by-step explanation:
Sister I gotcha b
Answer:
80x3 - 180x2 + 109x - 20
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4
Step-by-step explanation:
Question? i cant see again friend
Answer:
Step-by-step explanation:
Hello,
-1 <= -1 < 0
so f(-1)=-1
0 <= 0.5 < 1
so f(0.5)=0
1 <= 1 < 2
so f(1)=1
Thank you.
