1. tan a = cot(a + 10°)

Step-by-step explanation:

Use a cofunction identity on the right hand side or left hand side...

So .

We have the equation:

Make the above replacement:

Since cotangent has period 180 degrees, we can also write this as:

So solving the following will give us a set of solutions for :

Add on both sides:

Subtract 10 on both sides:

Divide both sides by 2:

Symmetric property:

p> q if you calculate p is100 q is 79