For 1. It is either symmetric property or transitive. Based on if they want you to show that they are congruent, or perpendicular symmetrical. For 2, angle b is reflexive because b=b, so the angle itself is also symmetric. Do you have any other information for numbers 3 and 4? Or do they just want you to repeat the side angle side congruences.
Answer:

Step-by-step explanation:
<u>Use implicit differentiation:</u>





(Quotient Rule:
)







See the attached picture to understand how to evaluate the mixed composition of trig functions using a right triangle.
Therefore, the derivative of arccot(x) is
.
Answer:
4 by 6
Step-by-step explanation:
Answer:
The product of a constant factor of six and a factor with the sum of two terms
Step-by-step explanation:
Answer:
A
Step-by-step explanation: