Mathematics, 02.08.2019 07:00 ani61
With these two questions i'm very confused! 1) if cos θ = 0.54, find sin(θ-pi/2). 2) if cot x = -0.18, find tan(x-pi/2).
Answers: 1
![\bf sin\left( \theta -\frac{\pi }{2} \right)\implies sin\left[-\left( \frac{\pi }{2}-\theta \right) \right]\implies -sin\left( \theta -\frac{\pi }{2} \right)\implies -cos(\theta ) \\\\\\ \textit{and since }cos(\theta )=0.54\qquad then\qquad -cos(\theta )\implies -0.54](/tpl/images/0160/8712/bc457.png)
![\bf tan\left( x-\frac{\pi }{2} \right)\implies \cfrac{sin\left( x-\frac{\pi }{2} \right)}{cos\left( x-\frac{\pi }{2} \right)}\implies \cfrac{sin\left[ -\left( \frac{\pi }{2}-x \right) \right]}{cos\left[ -\left( \frac{\pi }{2}-x \right) \right]} \\\\\\ \cfrac{-sin\left( \frac{\pi }{2}-x \right)}{cos\left( \frac{\pi }{2}-x \right)}\implies -tan\left( \frac{\pi }{2}-x \right)\implies -cot(x) \\\\\\ \textit{and since }cot(x)=-0.18\qquad then\qquad -cot(x)\implies 0.18](/tpl/images/0160/8712/2e182.png)
Another question on Mathematics
Mathematics, 21.06.2019 20:00
Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?
Answers: 3
Mathematics, 21.06.2019 20:50
Ms.ortiz sells tomatoes wholesale. the function p(x)=-80x^2+320x-10, graphed below, indicates how much profit she makes on a load of tomatoes if she makes on a load of tomatoes if she sells them for 4-x dollars per kilogram. what should ms.ortiz charge per kilogram of tomatoes to make on a load of tomatoes?
Answers: 2
Mathematics, 21.06.2019 21:00
A.s.a.! this is a similarity in right triangles. next (solve for x)a.) 12b.) 5c.) 12.5d.) [tex] 6\sqrt{3} [/tex]
Answers: 2
You know the right answer?
With these two questions i'm very confused! 1) if cos θ = 0.54, find sin(θ-pi/2). 2) if cot x = -0...
Questions
History, 17.04.2020 01:35
Computers and Technology, 17.04.2020 01:35
Health, 17.04.2020 01:36
