<span>tan(15) =
sin(15) / cos(15) =
sin(45 - 30) / cos(45 - 30) =
[ sin(45)cos(30) - sin(30)cos(45) ] / [ cos(45)cos(30) + sin(45)sin(30)]
Since sin(45) = cos(45) = √2/2, you can just factor that out from the top and bottom
[ cos(30) - sin(30) ] / [ cos(30) + sin(30)]
[ √3/2 - 1/2 ] / [ √3/2 + 1/2]
(√3 - 1) / (√3 + 1)
(√3 - 1)^2 / (√3+1)(√3 - 1)
(√3 - 1)^2 / (3 - 1)
(3 - 2√3 +1) / 2
2 - √3
There's also a formula for tan(a-b), but I couldn't remember it off hand.</span>
Answer:
m+5nx(9-p)-6-2r
The answer is b and d
Step-by-step explanation:
Hopefully this helped, if not HMU and I will gt you a better answer.
<em>-have a great day! :)</em>
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Answer:
c
Step-by-step explanation:
the answer to this quistion is becasue 36 is an propile number
Here, Original Equation: y = -2x - 5
Compare it with, y = mx + b
So, Slope(m) = -2
Parallel line slope = -2 [ Same ]
Now, y - y1 = m(x - x1)
y - 4 = -2(x + 8)
In short, Your Answer would be Option B
Hope this helps!
