Prove that sin 2x cos 2x=sin 3xx sin of the equation
The equation 
has 2 and x in common. This means you can factor both the 2 and x out of the equation like so...
2x(
)
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Answer:
8(1/x) = 4(1/10)
Step-by-step explanation:
lets say the number is x
eight times the reciprocal of a number equals 4 times the reciprocal of 10
8 * 1//x = 4 * 1/10
8/x = 4/10 , cross multiply
4x =8*10, divide both sides by 4
x= 80/4
x= 20
