D) square the number and add 2
Factor out the cos<span>θ:
</span>cosθ (2sin<span>θ + sqrt3) = 0
</span>Therefore, the only ways this can happen are if either cosθ = 0 or if (2sin<span>θ + sqrt3) = 0
</span>The first case, cosθ = 0 only at θ <span>= pi/2, 3pi/2.
</span>The second case, <span>(2sin<span>θ + sqrt3) = 0 simplifies to:
</span></span>sin<span>θ = (-sqrt3)/2
</span><span><span>θ = 4pi/3, 5pi/3
</span></span><span><span>Therefore the answer is A.
</span></span>
9/10....................................
For question 1, just plug in -2 as <em>h.
</em>

<em>
</em>You would get...

<em>
</em>Hope this helped! <em>-4, or option 1, is correct!</em><em>
</em>
That is your answer if it is wrong i will try to fix it