Mathematics
OpenStudy (anonymous):

2/5=4/5sec(x) which is equivalent to pi/3 but how

8 years ago
OpenStudy (anonymous):

I am viewing my own problem now

8 years ago

So first off you can move the 4/5 to the other side of the equals sign and get: $\sec x = \frac{\frac{2}{5}}{\frac{4}{5}} = \frac{1}{2}$ We know that $$\sec x$$ is the same as $$\frac{1}{\cos x}$$, which means that: $\frac{1}{\cos x} = \frac{1}{2}$ We can invert both sides and get: $\cos x = 2$ However, this does not make $$x$$ be $$\frac{\pi}{3}$$, so I don't know why you were told it was. Or did I misunderstand what you said about $$\frac{\pi}{3}$$?

8 years ago
OpenStudy (anonymous):

Is it possible that the OP wrote the problem wrong? If s/he had 4/5 = 2/5 sec x, then we have sec x = 2, which is equivalent to cos x = 1/2, and those DO give us x = π/3.

8 years ago

I hope so :) That's roughly what I was noticing.

8 years ago
Latest Questions
nataliehayes: Convert the following linear equation to standard form.
13 hours ago 0 Replies 0 Medals
kaylak: calculus help @vocaloid
11 hours ago 4 Replies 0 Medals
eviant: Math help pls
17 hours ago 15 Replies 1 Medal
katkit25: if you pollute you ruin homes of creatures such as
21 hours ago 4 Replies 0 Medals
Val050301: What theorem or postulate can be used to justify that HIG=FIE?
22 hours ago 2 Replies 1 Medal
johnnn: https://prnt.sc/n1x9uo
15 hours ago 4 Replies 1 Medal
eviant: Math help pls
23 hours ago 10 Replies 1 Medal
eviant: Math help pls
1 day ago 5 Replies 1 Medal