# Trig functions without a calculator

Without using a calculator, find cot[arcsin(-5/13)].

Â© BrainMass Inc. brainmass.com February 24, 2021, 2:08 pm ad1c9bdddfhttps://brainmass.com/math/trigonometry/trigonometric-functions-without-aid-calculator-4048

#### Solution Preview

Sin of an angle = opposite side / hypotenuse of a right triangle.

(-5/13) indicates that the right triangle is in the third quadrant.

with opposite ...

#### Solution Summary

This shows how to find the value of a trigonometric function without a calculator.

$2.19