Answer:
the answer is -30
Step-by-step explanation:
| 2 4 |
| 3 -9| = ( 2 * (-9) ) - ( 4 * 3)
= - 18 - 12
= -30
Answer:
21.0%
Step-by-step explanation:
Archimedes is known as the Father of Mathematics. Mathematics is one of the ancient sciences developed in time immemorial.
First, find angle ECD using tan^-1(6/4), we get angle as 56.31
Now by proportionate, angle ECD and angle EBA are equal.
Hence you can use tan to find AB i.e, AB = 18/tan(56.31)= 12
Therefore, AB = 12
1. You do 180-88 because supplementary angles add up to 180°.
2. 180-88=92°. Angle 4 is 92°
