Solution: =====> -7 + {12 - 3[50 - 4(2 + 3) ] } ======> -85
Simplify :
−7 + 12 − 3(50 - 4(2 + 3))
= 5 − 3(50 − 4(2 + 3))
= 5 − 3(50 − (4)(5))
= 5 − 3(50 − 20)
= 5 − (3)(30)
= 5 − 90
= − 85
Answer ========> -85
Hope that helps!!!! : )
Answer:
hi
Step-by-step explanation:
Answer:
Can you put the picture
Step-by-step explanation:
Answer:
B. No
![Cos \ \theta\neq Cos (90-\theta)\textdegree](https://tex.z-dn.net/?f=Cos%20%5C%20%5Ctheta%5Cneq%20Cos%20%2890-%5Ctheta%29%5Ctextdegree)
Step-by-step explanation:
-A right angle triangle has two complimentary acute angles and one right angle.
-
is usually one of the acute angles and is equivalent to 90º minus it's complimentary acute angle.
-Complimentary angles add up to 90º.
#For complimentary angles:
![Sin \ \theta=Cos \ (90-\theta)\textdegree\\\\Cos \ \theta=Sin(90-\theta)\textdegree\\\\\therefore Cos \ \theta\neq Cos (90-\theta)\textdegree](https://tex.z-dn.net/?f=Sin%20%5C%20%5Ctheta%3DCos%20%5C%20%2890-%5Ctheta%29%5Ctextdegree%5C%5C%5C%5CCos%20%5C%20%5Ctheta%3DSin%2890-%5Ctheta%29%5Ctextdegree%5C%5C%5C%5C%5Ctherefore%20Cos%20%5C%20%5Ctheta%5Cneq%20Cos%20%2890-%5Ctheta%29%5Ctextdegree)
The two acute angles cannot have the same Cosine value.
Hence, she's not correct.