Answer:
-6
Step-by-step explanation: dont know, did math. this is the answer on edge
You would need exactly 9 correct questions to get a 50%.
We can find this by multiplying the total number of questions by the percentage we are looking for.
18*50% = 9
Cos² 2x = (1+cos 4x )/2
cos² 6x = (1+cos 12x)/2
subtract to get 1/2 (cos 4x - cos 12x )
= 1/2 (2 sin 4x sin 8x ) as cos A - cos B = 2 [ sin (A+B)/2 sin (A-B)/2 ]
so the answer
Answer:
see attached formulas
Step-by-step explanation:
Math is beautiful. Have fun learning.
Answer:
c
Step-by-step explanation:
utstistidtizfizitsgitisgisigsgisgi