ACT Helper
ACT Helper
Tests
Browse ACT math questions by tests
Topics
Browse ACT math questions by topic
Practice
Practice timed math sections
Search
Open menu
Pricing
|
→
Login
Search
See all search results
Home
E23 Math
Question 58
2021 December(E23) Math Question 58
Trigonometry
- Pythagorean Theorem & sin cos tan
The law of sines & The law of cosines
Choice K
a
2
=
b
2
+
c
2
−
2
b
c
c
o
s
A
a^2=b^2+c^2-2bccosA
a
2
=
b
2
+
c
2
−
2
b
ccos
A
15
2
=
16
2
+
17
2
−
2
(
16
)
(
17
)
c
o
s
A
15^2=16^2+17^2-2(16)(17)cosA
1
5
2
=
1
6
2
+
1
7
2
−
2
(
16
)
(
17
)
cos
A
Skills you are tested for:
The law of sines & The law of cosines
Was this explanation helpful?
Yes
No
Add your comment
Your mood
Add your mood
Submit
Thanks for your feedback! ❤️
Comments
To leave a comment,
Sign up
or
Log in
Comments