A. if cosθ=−45 where θ is in quadrant 3, find sin2θ. b. if cosθ=2√2 where θ is in quadrant 1, find cos2θ. c. if sinθ=817 where θ is in quadrant 2, find tan2θ.

Part A)

Part B)

Part C)

Step-by-step explanation:

Part A) we have

θ is in quadrant 3 ----> the sine is negative

Find

we know that

Remember that

substitute

---> remember that the sine is negative (3 quadrant)

Find

we have

substitute

Part B) we have

θ is in quadrant 1

Find      

we know that

substitute

Part C) we have

θ is in quadrant 2 ----> the cosine is negative

Find  

we know that

Remember that

substitute

Find  

substitute

Find  

substitute

step-by-step explanation:

this woman was an important writer and propagandist during the american revolution. she was a member of the committee of correspondence (in fact the committee was formed in her home) and was an advisor to many of the revolutionary leaders, including george washington and john adams. who was this revolutionary woman?

step-by-step explanation: