Answer:
or 
Step-by-step explanation:
All we have to do here is substitute the given value of 
into the given expression. Therefore, after substituting 
into 
, we get:
(Substitute into )
(Multiply)
or (Simplify)
Hope this helps!
The answer is 1.
Here, we need to know the trigonometric values of sin 30° and cos 60°, which are :
- sin 30° = 0.5
- cos 60° = 0.5
Hence, sin 30° and cos 60° :
Answer:
-5n^2 +2n +5
Step-by-step explanation:
( -4n^2 +2n) - (n^2 -5)
Distribute the minus sign
( -4n^2 +2n) - n^2 +5
Combine like terms
-5n^2 +2n +5
Answer:
a
Step-by-step explanation:
