First slide

Trigonometric equations

Question

The smallest positive x satisfying $\log_{C o s x} S i n x + \log_{S i n x} C o s x = 2$ is

Moderate

A

$\frac{π}{2}$
B

$\frac{π}{3}$
C

$\frac{π}{4}$
D

$\frac{π}{6}$

Solution

$\sin x = \cos x$

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