Answer:
see explanation
Step-by-step explanation:
The sum of the 3 angles in a triangle = 180°
Subtract the sum of the given angles from 180 for B
B = 180° - (90 + 40)° = 180° - 130° = 150°
--------------------------------------------------------------
sin40° =
= 
Multiply both sides by 21
21 × sin40° = a, thus
a ≈ 13.5 ( to the nearest tenth )
--------------------------------------------------------------
cos40° =
= 
Multiply both sides by 21
21 × cos40° = b, thus
b ≈ 16.1 ( to the nearest tenth )
Answer:
line
Step-by-step explanation:
Answer with explanation:
Factors of -36 are

It is given that , among the factors of , -36 , one factor is 11 less than half of the other factor.
If you will take,
, then you can find such pairs.
Pairs are= (3,-4), (9, -1),(-1, -6),
Answer: 72250 dollars
Step-by-step explanation:
Just divide 289000 by 4 and you get 72250 dollars