I need an answer to this asap... please ....just number 3
2 answers:
Answer:
hence cos ( 2 A ) = cos 2 A − ( 1 − cos 2 A ) = 2 cos 2 A − 1
Step-by-step explanation:Well we know that for two angles A , B
it holds that cos ( A + B ) = cos A cos B − sin A ⋅ sin B hence for A = B you get cos ( 2 A ) = cos 2 A − sin 2 A But sin 2 A = 1 − cos 2 A
Answer:
is writing an answer
Step-by-step explanation:
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Answer:
Find the inverse of g(x)=1/x-1+2 :
I suggest using an app for math to solve problems like this they r helpful for example PhotoMath and Socratic
5x + X/3 = 38.4
or, 5x* 3 + X = 38.4*3
or,. 15x + X. = 115.2
or,. 16 X. = 115.2
or,. X. = 115.2/16
X = 7.2
Answer:
D
Step-by-step explanation:
add everything up devide by 3
Answer:
I act answer it sorry for that
