Well, some integers can be irrational, but not all! :)
There is no question? ...
:) Hope this helps you to your question
Answer:
Step-by-step explanation:
Hint: 1- 2sin²x = Cos 2x
LHS = 1 - 2Sin² (π/4 - Ф/2)
= Cos 2 *(π/4 - Ф/2)
= Cos 2*π/4 - 2*Ф/2
= Cos π/2 - Ф
= Sin Ф = RHS
Answer:michelle
Step-by-step explanation: it is 70% of the cost since it’s 30% of the original
