Evaluate a given an expression as the sum or difference

The video tutorial discusses a formula related to tangent and cotangent, focusing on the tangent of the sum of angles. It explains how to calculate the tangent and cotangent of specific angles, emphasizing the reciprocal relationship between tangent and cotangent. The tutorial concludes with a brief mention of a problem-solving approach.

What does the formula 'tangent of 40 degrees plus tangent of 20 degrees, all over 1 minus tangent of 4 degrees tangent of 20 degrees' represent?

• The difference of two angles

• The sum of two angles

• The division of two angles

• The product of two angles

If the tangent of an angle is known, how can you find the cotangent?

• Subtract 1

• Multiply by 2

• Take the reciprocal

• Add 1

What is the tangent of 60 degrees?

• 1

• Square root of 2

• Square root of 3

• 1/2

What is the reciprocal of the tangent of 60 degrees?

• Square root of 3 / 3

• 1

• Square root of 3

• 2

How is the cotangent of 60 degrees related to the square root of 3?

• It is equal to the square root of 3

• It is the square root of 3 multiplied by 3

• It is the square root of 3 plus 3

• It is the square root of 3 divided by 3