Sine, cosine, tangent and cotangent | math4u.vsb.cz

2010016808

Level:

C

Simplifying the expression

\cos 2 x + \sin 2 x \cdot tg x

for

x \in (0; \frac{π}{2})

we get:

1

\sin^{2} x

\cos^{2} x

2 \sin^{2} x

2100004203

Level:

C

Which of the graphs is the graph of the function

f (x) = | 1 + \cos x |

?

9000033810

Level:

C

Find the parity (odd/even) of the function

l : y = | cotg x |

.

The function

l

is an even function.

The function

l

is an odd function.

The function

l

is neither an odd nor even function.

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