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Right triangle trigonometry

Submitted by robert.marik on Thu, 11/15/2018 - 10:16

Question:

The diagram shows a right-angled triangle with the right angle at the vertex $C$. Mark the appropriate fraction that defines the goniometric function in the triangle for each of the given goniometric functions.

Pairs of Angles

Submitted by robert.marik on Wed, 11/14/2018 - 11:05

Question:

The picture shows distinct parallel lines $a$, $b$ and $c$, $d$ intersecting at a certain angle. What are the pairs of marked angles called?

Complex Conjugate of a Complex Number II

Submitted by robert.marik on Thu, 11/08/2018 - 15:16

Question:

In the figure complex numbers $ A $-$ G $ in the cartesian coordinate system are shown. In the table for each of the given complex numbers choose its complex conjugate. If the complex conjugate is not shown in the figure, choose X .

Combinatorial expressions

Submitted by robert.marik on Thu, 11/08/2018 - 12:47

Question:

Without calculator, simplify and evaluate the following expressions (for $n\in\mathbb N$). For each expression choose its correct value and if it isn’t in the table, choose X.

Quadratic functions and vertices of parabolas I

Submitted by robert.marik on Thu, 11/08/2018 - 10:57

Question:

For each quadratic function choose the vertex of the parabola.

Comparison of Absolute Values\\ of Complex Numbers

Submitted by robert.marik on Sat, 11/03/2018 - 21:43

Question:

Choose the correct sign ($< $, $=$, $>$) to fill in the inequality / equality of absolute values of complex numbers.

A

Right triangle trigonometry

Pairs of Angles

Complex Conjugate of a Complex Number II

Combinatorial expressions

Quadratic functions and vertices of parabolas I

Comparison of Absolute Values\\ of Complex Numbers

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