I hope this helps you
(1-cosx)(1+cosx)=1+cosx-cosx-cos²x=1-cos²x=sin²x
sin²x
____
cos²x
tg²x
Step-by-step explanation:
→ 7m – q = 23
- q subtracted from 7 times m is equivalent to 23.
Answer:
(-∞, 0) U (8, ∞)
Step-by-step explanation:
Ask every fifth person that exits the school
(systematic random)
Answer:
C) 35
Step-by-step explanation:
