Sin420°+Cos390°-Cos(-300°)Sin(-330°) Solve And Answer Value?
3 Answers
Explanation:
=
=
Adding or subtracting
Explanation:
Angles that differ by a multiple of
Let's get all of these in the range
We know what all of those are so we could work this out, or recognize it as the sine difference angle formula:
Now split the angle measurement in terms of
This is of the form,