Use the following to answer questions :
tan$\theta$ = ; $\theta$ in QII.
-Find the exact value of cos(2$\theta$ ).

Question

Use the following to answer questions :
tan$\theta$ =  ; $\theta$ in QII.
-Find the exact value of cos(2$\theta$ ).

Quizplus · Accepted Answer

From the given equation, we can find the values of sine and cosine of θ.
sin θ = F1F1F1S1/sqrt(F1F1F1S1^2 + 11^2) = -F1F1F1S1/12
cos θ = 11/sqrt(F1F1F1S1^2 + 11^2) = F1F1F1S1/12

Now, we can use the double angle formula for cosine:
cos (2θ) = cos^2 θ - sin^2 θ
= (F1F1F1S1/12)^2 - (-F1F1F1S1/12)^2
= (2F1F1F1S1^2)/144

Simplifying the fraction, we get 11ea7f29_4ffa_bb23_9ecd_55e14fa0d218_TB3307_11, which is choice C.

Use the Following to Answer Questions : Tan θ\thetaθ = ;

Use the Following to Answer Questions :
Tan $\theta$ = ;