Express

$\sin {74}^{\circ }$ in terms of cosine

Express

$\tan {12}^{\circ }$ in terms of cotangent

Express

$cosec{39}^{\circ }$ in terms of secant

Evaluate:

$\frac{\sin {49}^{\circ }}{\cos {41}^{\circ }}$

Evaluate:

$\frac{\sec {63}^{\circ }}{cosec{27}^{\circ }}$

Find the values of

$\tan 7^{\circ }\tan {23}^{\circ }\tan {60}^{\circ }\tan {67}^{\circ }\tan {83}^{\circ }$

Find the values of

$\frac{\cos {35}^{\circ }}{\sin {55}^{\circ }}+\frac{\sin {12}^{\circ }}{\cos {78}^{\circ }}-\frac{\cos {18}^{\circ }}{\sin {72}^{\circ }}$