A right triangle has only one 90° angle. Both of its other angles have measures greater than 0° and less than 90°. Why is it useful to define the tangent of 90° to equal 1, and the tangent of 0° to equal O?

*use the picture to answer the three missing parts*

Complementary angles are very close to 0° and 90°/0°. (Which)

The tangent of the small angle is very close to 1/1 or 0/1. (Which)

The tangent of the larger angle will be very close to 0/1 or 1/1. (Which)