Its SecA

Geometry Level 3

Find the number of real roots of the quadratic equation 8 sec ⁡ 2 A − 6 sec ⁡ A + 1 = 0 8\sec^2 A-6\sec A +1=0 .

0 1 3 2

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2 solutions

Raj Rajput
Oct 31, 2015

4 Helpful 0 Interesting 0 Brilliant 0 Confused

You nailed it .I have observed that most of your answers are in written form,it's good, preserve these solutions..Xd

Krishna Shankar - 5 years, 7 months ago

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Thank you @Krishna Shankar :)

RAJ RAJPUT - 5 years, 7 months ago
Rwit Panda
Nov 1, 2015

We can simply get the roots to this equation as 1/2 and 1/4. But here comes the tricky part. The variable is the secant function. It can take values less than -1 and greater than 1.

So, though we have 2 roots, but none comply. So answer is 0. :)

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