Home / Expert Answers / Trigonometry / 3-given-that-cos-54-and-is-in-quadrant-iii-find-the-following-a-cos-2-b-t-pa383

(Solved): 3. Given that cos()=54 and is in Quadrant III, find the following: (a) cos(2) (b) t ...

$3. Given that \( \cos (\theta)=-\frac{4}{5} \) and \( \theta \) is in Quadrant III, find the following: (a) \( \cos \left(\fr$

3. Given that

cos (?) = ? \frac{4}{5}

and

?

is in Quadrant III, find the following: (a)

cos (\frac{?}{2})

(b)

tan (\frac{?}{2})

We have an Answer from Expert

View Expert Answer

Expert Answer

It is given that cos??=?45 and ? is in III quadrant.The objective is to find the required values.Use formula of cos?(?2)=±1+cos??2 and tan?(?2)=±1?c

We have an Answer from Expert

Buy This Answer $5

Place Order

We Provide Services Across The Globe

Order Now

Go To Answered Questions