Answer:
cos Ф = adj / hyp = √5 / 3
Step-by-step explanation:
If sin Ф is +, then Ф must be in either Quadrant 1 or Quadrant 2.
If tan Ф < 0, then Ф must be in either Quadrant 2 or Quadrant 3.
So we conclude that Ф is in Quadrant 2.
If sin Ф = opp / hyp = 2/3, then opp = 2 and hyp = 3, and adj is found using the Pythagorean Theorem:
adj = √( 3² - 2² ) = √( 5 )
With adj = √5 and hyp = 3, cos Ф = adj / hyp = √5 / 3
Answer:
100√65 yds
Step-by-step explanation:
The Pythagorean Theorem is a^2+b^2=c^2. In this case a=700, b=400, and c is the unknown.
- 700^2+400^2=c^2
- 490000+160000=c^2
- 650000=c^2
- c=√650000
√650000=√(100^2•65)=100√65
3/10 since it's a fraction it's rational
87 58%
_ _
x 100% = 8700/58 = 150.862069 = 150.86
