Can someone please help me ASAP I will mark Brainliest with correct answer or close thank you so much :)

If 90° < θ < 180° and cotθ = -1/3, then cscθ =

Suppose you are an avid reader and are looking to save money on the cost of books instead of paying about $20 for each book, you decide to look into purchasing a kindle for $120 you can purchase e-books for about $5 each 1. find the slope-intercept equation for the cost of the hard copy of books using x to represent the number of books 2. find the slope-intercept equation for the cost of the kindle with cost of e-books using x to represent the number of books

The distance of a chord from the centre of a circle is 12cm and the lenght of the chord is 10cm. find the radius of the circle