(1) The length of the other right-angled side AB is c = b/tant；;
(2) The hypotenuse length CB is a=b/sint.
Extended data:
Basic properties of right triangle;
1, the sum of squares of two right angles of a right triangle is equal to the square of the hypotenuse. As shown in figure ∠ BAC = 90, then AB? +AC？ =BC？ Pythagorean theorem
2. In a right triangle, two acute angles are complementary. As shown in the figure, if ∠ BAC = 90, ∠ B+∠ C = 90.
3. In a right triangle, the median line on the hypotenuse is equal to half of the hypotenuse (that is, the outer center of the right triangle is located at the midpoint of the hypotenuse, and the radius of the circumscribed circle R=C/2). This property is called the hypotenuse midline theorem of right triangle.
4. The product of two right angles of a right triangle is equal to the product of hypotenuse and hypotenuse height.
5. As shown in the figure, in Rt△ABC, ∠ BAC = 90, and AD is the height on the hypotenuse BC, then the projective theorem is as follows:
( 1)(AD)？ =BD DC .
(2) (AB)? =BD BC .
(3) (AC)? =CD BC .
6. Projective Theorem, also known as Euclid Theorem: In a right triangle, the height on the hypotenuse is the median term of the ratio of the projection of two right-angled sides on the hypotenuse, and each right-angled side is the median term of the ratio of the projection of this right-angled side on the hypotenuse to the hypotenuse. It is an important theorem of mathematical graphic calculation.
References:
Baidu encyclopedia-right triangle