Question 11 Mark$\cos \frac{7 \pi}{8}=$ ________.Answer$-\frac{1}{2} \sqrt{2+\sqrt{2}}$View full question & answer→
Question 21 Mark$2 \sin \frac{A}{2} \cos \frac{A}{2}=$ _________.Answer$\sin A$View full question & answer→
Question 41 Mark$\sin 18^{\circ}=$ _________.Answer$\frac{\sqrt{5}-1}{4}$View full question & answer→
Question 51 Mark$\cos \left(-\frac{8 \pi}{3}\right)=$ _________.Answer$-\frac{1}{2}$View full question & answer→
Question 61 MarkThe value of $\tan \frac{13 \pi}{12}$ is __________.Answer$2-\sqrt{3}$View full question & answer→
Question 71 MarkThe value of $\sin \frac{31 \pi}{3}$ is _________.Answer$\frac{\sqrt{3}}{2}$View full question & answer→
Question 81 Mark1 radian $=\frac{180^{\circ}}{\pi}=$ _________.Answer$57^{\circ} 16^{\prime}$View full question & answer→
Question 101 MarkRadian measure $=$ ________.Answer$\frac{\pi}{180} \times$ degree measureView full question & answer→