Convert this identity to one using sine terms only ! 1-2 cos^2 r= a. -1-sin^2r b. 2sin^2r-1 c. 1-2sin^2t explain!

option B is correct.

Step-by-step explanation:

Given the expression:                      ......[1]

Using trigonometric identities:

We can rearrange this as;

     ......[2]

Substitute equation [2] into [1] we get;

Using distributive property:  

or

therefore, the given expression in terms of sine terms is;

answer: y = -2.5x - 15

              (-6,0)

step-by-step explanation:

think about the doctor who treated the major and the speaker in the short story "in another country." put yourself in the shoes of the doctor, and based on what you read in the story, write what you think his thoughts about the major and the speaker would be. use the following vocabulary in your response and change the form of these words as needed: detached resign withered