Trigonometry

Answer all the questions below and press submit to see how many you got right.

id: 15206
Card image cap

Given is a right triangle that has a hypotenuse of length c. One of the other angles is α and the leg opposite to this angle has length a. Then ac=?

  • tanα
    sinα
    cotα
    cosα
id: 15221
Card image cap

We are given an equilateral triangle with side lengths 1. Lets denote the height of that triangle by h. The height divides the triangle into two congruent right triangles with angles 30 and 60, hypotenuse 1 and side lengths 0.5 and h. This implies sin60=cos30=h1=h. What is the height of the equilateral triangle h?

  • 13
    12
    12
    32
id: 15211
Card image cap

What is the length of the tangent d in the picture?

  • tanα
    sinα
    cosα
    cotα