Trigonometry - 2. Find the value of the trigonometric function of 64 degrees 6 minutes 45 seconds.
3. If an a right triangle the sides a and b are known, the angle B equal to:
Fundamental Identities - Prove the following Identities:
1. sec A = cos A (tanē A + 1)
2. secē A = sinē A + cosē A + tanē A
3. 1 + sin A = cosē A / 1 - sin A
4. cot A csc A / sec A = cotē A + 1 / tanē A + 1