Introduction to Trigonometry
What is the value of $\sin 30^\circ \cos 60^\circ + \cos 30^\circ \sin 60^\circ$?
If $\tan \theta = \frac{4}{3}$, then the value of $\sin \theta$ is:
The value of $9 \sec^2 A - 9 \tan^2 A$ is:
If $\sin \theta = \cos \theta$, then the value of $\theta$ is (where $\theta$ is an acute angle):
What is the value of $\frac{2 \tan 30^\circ}{1 + \tan^2 30^\circ}$?
The value of $(1 + \tan \theta + \sec \theta)(1 + \cot \theta - \csc \theta)$ is:
What is the value of $\frac{\sin 18^\circ}{\cos 72^\circ}$?
The value of $\sec A (1 - \sin A)(\sec A + \tan A)$ is:
If $\tan 2A = \cot(A - 18^\circ)$, where $2A$ is an acute angle, then the value of $A$ is:
What is the simplified form of $(\1 - \cos \theta)(1 + \cos \theta)(\1 + \cot^2 \theta)$?
If $\cos A = \frac{3}{5}$, then the value of $\tan A$ is:
The value of $\frac{5 \cos^2 60^\circ + 4 \sec^2 30^\circ - \tan^2 45^\circ}{\sin^2 30^\circ + \cos^2 30^\circ}$ is:
If $\sin \theta = \frac{a}{b}$, then $\cos \theta$ is equal to:
The value of $\tan 1^\circ \tan 2^\circ \tan 3^\circ \dots \tan 89^\circ$ is:
If $\sec \theta + \tan \theta = x$, then the value of $\sec \theta - \tan \theta$ is:
What is the value of $(\sin^4 \theta - \cos^4 \theta)$?
If $\cot \theta = \frac{7}{8}$, then the value of $\frac{(1 + \sin \theta)(1 - \sin \theta)}{(1 + \cos \theta)(1 - \cos \theta)}$ is:
The value of $\sin^2 60^\circ + \cos^2 30^\circ$ is:
If $3 \cot A = 4$, then the value of $\frac{1 - \tan^2 A}{1 + \tan^2 A}$ is:
What is the value of $\frac{\tan 26^\circ}{\cot 64^\circ}$?
What is the value of $\frac{1 - \tan^2 45^\circ}{1 + \tan^2 45^\circ}$?
If $\sin A = \frac{3}{4}$, then what is the value of $\cos A$?
If sin A = 3/5, then cos A is?