Here shall use the cosine rule:
let the length of the first diagonal be d;
thus
d²=8²+6²-2*6*8cos55
d²=64+36-96cos55
d²=44.93666211
d=6.7035
We know that two adjacent angles of parallelogram are supplementary, so since 180-55=125°, the length of the second diagonal d', we shall have:
d'²=8²+6²-2×8×6cos 125
d'²=64+36-96cos125
d'²=155.0633379
d=12.45244
Answers: (6.7035,12.45244)
Answer:
1.8 hours ( 108 minutes)
Step-by-step explanation:
10% of 2 hours is 12 minutes
120 minutes - 12 minutes = 108 minutes
Answer: -5.6
Step-by-step explanation:
-(3.1+2.5)= -5.6
The answer to this question is A. 12
Answer:
n+11=15
-11 -11
n=4
Step-by-step explanation:
subtract 11 from both sides
