Quiz about Identidades trigonométricas

Question 1

Si

$$\sin\left(a+b\right)=\sin a\cdot\cos b+\sin b\cdot\cos a$$

entonces $$\sin\left(2x\right)=$$

Accepted Answer

$$2\sin x\cos x\ $$

Answer

$$2\left(\sin x+\cos x\right)$$

Answer

$$\sin x+\cos x\ $$

Answer

$$\sin^2x-\cos^2x$$

Question 2

Es el nombre de este personaje:

Accepted Answer

Comegalletas

Answer

Elmo

Answer

Abelardo

Answer

Vegueta

Question 3

Si

$$\cos\left(a+b\right)=\cos a\cdot\cos b-\sin a\cdot\sin b$$

entonces $$\cos\left(2x\right)=$$

Accepted Answer

$$\cos^2x-\sin^2x$$

Answer

$$2\left(\sin x+\cos x\right)$$

Answer

$$2\sin^2x\cos^2x\ $$

Answer

$$\sin x-\cos x\ $$

Question 4

Si multiplicamos

$$ an^2 heta\ \cdot\operatorname{ctg}^2 heta=$$

obtenemos:

Accepted Answer

1

Answer

$$ an heta$$

Answer

2

Answer

$$ an^{-1} heta$$

Question 5

Si $$\sin^2x+\cos^2x=1$$

entonces $$\left(\sin^2x+\cos^2x\right)^3$$

es igual a:

Accepted Answer

1

Answer

$$\sin^6x+\cos^6x$$

Answer

$$\sin^5x+\cos^5x$$

Answer

3

Question 6

Si $$ an^2x+1=\sec^2x$$

entonces $$ an^2\ \frac{\alpha}{5}+1=$$

es igual a:

Accepted Answer

$$\frac{1}{\cos^2\ \frac{\alpha}{5}}$$

Answer

$$\frac{1}{5}\sec^2\ \frac{\alpha}{5}$$

Answer

1

Answer

$$\frac{1}{5}$$

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