Let $a = (23)$ and $b = (- 1 4)$ . What is $a + b$ ?

Practise more Geometry, Trigonometry and Vectors.

Free questions with an explanation for every one, and full timed Studentereksamen STX (Denmark) mock tests.

All Geometry, Trigonometry and Vectors questions Take a mock test

More Geometry, Trigonometry and Vectors questions

A right triangle has legs $5$ and $12$ . How long is the hypotenuse?
Two angles of a triangle are $5 0^{\circ}$ and $6 0^{\circ}$ . What is the third angle?
In a right triangle with hypotenuse $10$ and an angle of $3 0^{\circ}$ , how long is the side opposite that angle?
In triangle $A B C$ , $a = 8$ , $A = 3 0^{\circ}$ and $B = 9 0^{\circ}$ . What is $b$ ?
What is the dot product $a \cdot b$ for $a = (2, 3)$ and $b = (- 1, 4)$ ?
For which value of $k$ are $a = (3, k)$ and $b = (2, - 6)$ perpendicular?