Todas as tarefas
Relações entre as razões trigonométricas 1
A fórmula fundamental da trigonometria é :
$ \sin^2 \alpha + \cos^2 \alpha = 1$ e a relação entre o seno, o cosseno e a tangente de um ângulo é $ \tan \alpha= \frac { \sin \alpha}{ \cos \alpha}$.
Determina a tangente de $ \alpha$, sabendo que o $ \sin \alpha = \frac{1}{5}$ e que $ \alpha \in [ 0, ~\frac{\pi}{2}]$.
Seleciona a opção verdadeira.
# Trigonometry
Training
11
Right Triangle
Calculate the missing value.
# Pythagorean theorem
Learning
8
Finding out the hypotenuse
Calculate the exact value of the missing value.
Select the true statements.
# Pythagorean theorem
Training
8
Calculate abscissa with Pythagorean Theorem
Calculate the exact value of abscissa of point $\ {A}$.
# Pythagorean theorem
Learning
8
Lake modeling
In a lake, there are p fish. For each fish there are 20 fish eggs. Among the 20 fish eggs, just 7 hatch for each fish. Can you tell how many fish will be in the lake once the eggs hatch?
# Terms with variables
Modeling
7
Supportive task for "From natural to algebraic language"
How can we express with symbols an even and an odd number respectively?
# Natural numbers
Training
8