Trig Identities Quiz

Pythagorean Identities for Trigonometry

​ (a)   + $$\cos^2\theta$$ = ​ (b)  

​ (c)   + 1 = ​ (d)  

Pythagorean Identity for Trigonometry

​ (a)   + ​ 1 = $$\csc^2\theta$$

What is the rest of the equation for $$\sin\left(2\theta\right)=?$$

What is the rest of the equation for

$$\tan\left(2\theta\right)=?$$

The equations for Cosine of a Double Angle are:

$$\cos\left(2\theta\right)=$$ ​ ​ ​ (a)   $$-$$ ​ (b)  

$$=1-$$ ​ (c)  

$$=$$ ​ (d)   $$-1$$

$$\sin\left(\alpha+\beta\right)=$$ ​ ​ (a)   ​ ​​ (b)   ​ (c)  

$$\cos\left(\alpha+\beta\right)=$$ ​ ​ (a)   (b)   ​​ (c)  

$$\sin\left(\frac{\theta}{2}\right)=\pm\ \sqrt[]{\ \ \ \ \ \ \ \ \ \ \ \ \ \ }$$ ​

What goes under the square root sign?

$$\cos\left(\frac{\theta}{2}\right)=\pm\ \sqrt[]{\ \ \ \ \ \ \ \ \ \ \ \ \ \ }$$ ​

What goes under the square root sign?

$$\tan\left(\frac{\theta}{2}\right)=\pm\ \sqrt[]{\ \ \ \ \ \ \ \ \ \ \ \ \ \ }$$ ​

What goes under the square root sign?