1) Find the exact value of cos 105 degrees by using a half-angle formula.

2)Find the solution of sin 2theta = cos theta if 0 degrees</= theta < 180 degrees.

I have read the book and looked at the examples, but cannot figure out how to work these. Any help would be great!!

Thanks

2)Find the solution of sin 2theta = cos theta if 0 degrees</= theta < 180 degrees.

I have read the book and looked at the examples, but cannot figure out how to work these. Any help would be great!!

Thanks

### Recently Asked Questions

- Methylamine has a vapor pressure of 344 torr at −25 ∘C and a normal boiling point of −6.4 ∘C. Find ΔHvap for methylamine.

- 6. What measurement method was used to measure the bone mineral density (BMD) for the study participants? Discuss the quality of this measurement method and

- The significance of the American Revolution to world history cannot be emphasized enough. As the first successful independence movement of a European colony,