How to evaluate cotangent using a calculator

The video tutorial explains that calculators often lack a cotangent key, and highlights the reciprocal relationship between cotangent and tangent. It instructs viewers on how to calculate cotangent by using the tangent function, specifically demonstrating with the angle π/8. The tutorial emphasizes the importance of setting the calculator to radians for accurate trigonometric calculations.

What is the relationship between cotangent and tangent?

• Tangent is the reciprocal of cotangent.

• Cotangent is the reciprocal of tangent.

• They are unrelated.

• They are equal.

Which trigonometric functions are typically not found as keys on a calculator?

• Sine, cosecant, secant

• Cotangent, cosecant, secant

• Sine, cosine, tangent

• Cosine, tangent, cotangent

How can you calculate cotangent using a calculator?

• By multiplying the tangent by 1

• By using the cotangent key

• By dividing 1 by the tangent of the angle

• By dividing 1 by the sine of the angle

What should you ensure when working with angles in radian measure on a calculator?

• The calculator is set to automatic mode

• The calculator is set to gradians

• The calculator is set to radians

• The calculator is set to degrees

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

• 0.707

• 2.414

• 1.732

• 3.142