How to evaluate cotangent using a calculator

The video tutorial explains that calculators often lack a cotangent key, but cotangent can be calculated as the reciprocal of tangent. The instructor guides viewers on how to enter this into a calculator, emphasizing the need to switch to radians mode. An example calculation of cotangent for π/8 is provided, resulting in approximately 2.414.

What is the relationship between cotangent and tangent?

• They are inverses.

• They are identical.

• They are reciprocals.

• They are equal.

Which trigonometric functions are typically not found on a calculator?

• Cotangent, cosecant, secant

• Sine, cosine, tangent

• Tangent, cotangent, sine

• Sine, cosecant, secant

How can you calculate cotangent using a calculator?

• By dividing 1 by sine

• By multiplying tangent by 2

• By dividing 1 by tangent

• By using the cotangent key

What should you ensure when calculating trigonometric functions in radians?

• The calculator is set to degrees

• The calculator is set to decimals

• The calculator is set to radians

• The calculator is set to fractions

What is the approximate value of 1 divided by tangent of π/8?

• 2.414

• 1.732

• 3.142

• 0.707