It looks like you're missing some parentheses.
I think this is the equation you mean:
sin(x)/(1-cos(x)) + sin(x)/(1+cos(x))
your common denominator is (1-cos(x))*(1+cos(x)), which is the difference of squares simplification and is equal to (1-cos^2(x)) = sin^2(x)
Numerator: sin(x)*(1+cos(x)) + sin(x)*(1-cos(x))
= sin(x) +sin(x)cos(x) + sin(x) - sin(x)cos(x)
= 2sin(x)
Answer: 2sin(x)/sin^2(x) = 2/sin(x) = 2csc(x)
Answer:
7
Step-by-step explanation:
He jobs 7 miles every morning:
3 miles in the morning, and 4 miles in the evening.
Which equals 7.
Answer:
28.85
Step-by-step explanation:
..... ....
......
Answer:
1)2500
2) 1500
3)2.5%
Step-by-step explanation:
1) the standard formula for interest is i=prt where i= interest, p= principal and t=time
In the first scenario, everything but the principal is given so lets substitute the info into the equation:
75=p*0.03*1
75= 0.03p
75/0.03=p
2500=p
Same thing for second scenario, just different numbers
120=0.04*2*p
120=0.08p
1500=p
This time everything but the rate is given:
250=10000*1*r
250=10000r
Divide both sides by 10000
0.025=r
2.5%=rate(convert into percentage)
Hope this helps!
Answer:
88% of the cupcakes sold were chocolate :)
