Question

Is (2√2+√3)/4 the answer to sin(31pi/3)cos(-25pi/6)+cot765?

Please show step by step complete solutions

Answer 1

using the unit circle, identify the values of sine and cosine of the angles

Answer 2

So I can get the answer by getting the reference angles first right? But how do I solve for cot765 since it's a really big number? @shinalcantara

Answer 3

if you try to locate 765 in the unit circle, it's a 45-degree angle located at the 1st quadrant. since we don't have a value for cot, you'll have it expressed in terms of cosine and sine. cotangent can also be expressed as cosine/sine