Welcome to the course
About the course
Examinations
1. Numerical calculations
1.1 Different types of numbers
1.2 Fractions
1.3 Powers
2. Algebra
2.1 Algebraic expressions
2.2 Linear expressions
2.3 Quadratic expressions
3. Roots and logarithms
3.1 Roots
3.2 Equations with roots
3.3 Logarithms
3.4 Logarithmic equations
4. Trigonometry
4.1 Angles and circles
4.2 Functions
4.3 Relations
4.4 Equations
5. Written mathematics
Search
Warning:
jsMath
requires JavaScript to process the mathematics on this page.
If your browser supports JavaScript, be sure it is enabled.
Answer 4.2:8
From Förberedande kurs i matematik 1
Jump to:
navigation
,
search
\displaystyle \ell\cos \gamma=a \cos \alpha - b\cos \beta
