Use identities to solve each of the following. See Examples 5–7.
Find sec θ, given that tan θ = and θ is in quadrant III.
(Reference Example 5)
Suppose that angle θ is in quadrant II and sin θ = . Find the values of the other five trigonometric functions.
(Reference Example 6)
Find sin u and tan θ, given that cos θ = and sin θ > 0.
(Reference Example 7)
Find sin θ and cos θ, given that tan θ = and θ is in quadrant III.
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