SOLUTION: Given that cos θ = −16/65, θ in quadrant II, do the following.
(a) (4 pts) Draw the triangle for θ. Label.
(b) (4 pts each) Find exact values of sin 2θ,
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-> SOLUTION: Given that cos θ = −16/65, θ in quadrant II, do the following.
(a) (4 pts) Draw the triangle for θ. Label.
(b) (4 pts each) Find exact values of sin 2θ,
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Question 1064372: Given that cos θ = −16/65, θ in quadrant II, do the following.
(a) (4 pts) Draw the triangle for θ. Label.
(b) (4 pts each) Find exact values of sin 2θ, cos 2θ, and tan 2θ. No decimals.
(c) (2 pts) Determine the quadrant of 2θ. Justify your answer Answer by ikleyn(52781) (Show Source):
You can put this solution on YOUR website! .
Given that cos θ = −16/65, θ in quadrant II, do the following.
(a) (4 pts) Draw the triangle for θ. Label.
(b) (4 pts each) Find exact values of sin 2θ, cos 2θ, and tan 2θ. No decimals.
(c) (2 pts) Determine the quadrant of 2θ. Justify your answer
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a) I will not do a). Instead, YOU do it.
b) = = = . The sign at the square root is "+" since is positive in Q2.
====> = = = calculate. ( Notice it is negative !)
= = = calculate. ( Notice it is negative !)
= = calculate.
For it, and you just calculated above (I suppose !).
c) Since both and are negative, the angle is in Q3.
