In Exercises 1 4, write the expression as the sine, cosine, or tangent of an angle 1 sin 3 cos 1 2 cos 3 sin 1 2 2 cos 7 cos 5 sin 7 sin 5 3 sin 60 cos 15 cos 60 sin 15 4 cos 130 cos 40 sin 130 sin 40 ...

1 sin 3 cos 12 cos 3 sin 12 sin3 12 sin 18 2 cos ...

In Exercises 1-4, write the expression as the sine, cosine, or tangent of an angle. 1. sin

Question:

In Exercises 1-4, write the expression as the sine, cosine, or tangent of an angle.
1. sin 3 cos 1.2 − cos 3 sin 1.2
2. cos π / 7 cos π / 5 - sin π / 7 sin π / 5
3. sin 60° cos 15° + cos 60° sin 15°
4. cos 130° cos 40° − sin 130° sin 40°