Todas as tarefas
[MOOC]Redução ao primeiro quadrante e fórmulas trigonométricas
Seja $\alpha \in \left [ \frac{\pi }{2}, \frac{3\pi }{2} \right ]$, tal que $sen\alpha =\frac{\sqrt{5}}{5}$
Determina o valor de $tg\left ( \pi +\alpha \right )\times cos\left ( \frac{11\pi }{2}+\alpha \right )+sen\left ( -\frac{\pi }{2}-\alpha \right )$. Apresenta o resultado arredondado às centésimas.
# Trigonometric functions
Reasoning
11
[MOOC]Simplificación de polinomios
Simplifica la siguiente fracción algebraica:
$\frac{x^{3}-x}{x^{3}+3x^{2}+2x}$
# Monomials & polynomials
Training
5
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