In dit vierkant is
cot α − cot β
gelijk aan
|
A. 0,1 |
|---|
| B. 0,2 |
| C. 0,3 |
| D. 0,4 |
| E. 0,5 |
[ 4-8388 - op net sinds 21.3.2019-(E)-30.10.2023 ]
Translation in E N G L I S H
In this square
cot α − cot β
is equal to
|
A. 0.1 |
|---|
| B. 0.2 |
| C. 0.3 |
| D. 0.4 |
| E. 0.5 |
Oplossing - Solution
cot α − cot β = tan (90° − α) − tan (90° − β)
= \(\frac{3}{5}\) − \(\frac{2}{5}\) = \(\frac{1}{5}\) = 0,2
