Can someone explain how to find the answer for this pre-calculus question?

Select the best answer.

cot A sin 2A=

a. 1 + cosA

b. 1 + sin2A

c. 1 + cos2A

On a map the key indicates that one inch equals 50 miles. It is 600 miles from Ricky's house to the Willis tower in Chicago. What is the distance from Ricky's house to the Willis tower on the map

Corresponding angles examples

6 stools and 4 chairs cost $58 but 5 stools and 2 chairs cost $35 find the coast of each stool and each chair

If a car wheel rotates once per second, how far does the car travel in one minute?

Two similar cylinders have a scale factor of 1.6/3. Find the ratio of their volumes. Answer must be in fraction form.

True/false:the following equation is an example of distributive property 42+22+56+11=131

14 ft = how many yards with a remainder of feet

protons are positive and electrons are negative if atom has 12 protons and 15 electrons what is the overall charge

What is the definition of undefined term?

In binary system 100 + 101 = 1001. write decimal equivalent of the summand and sum.