Well 21 times 2 is 42 and 1/3 of 21 is 7 so 42+7 is 49. hope this is right
<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:
416
Step-by-step explanation:
26 times 16 is 416
Answer:
is 1
Step-by-step explanation:
sorry if im wrong this is my first time doing this
9:45 + 10 = 9:55
9:55 + 2:00= 11:55 This is what I got
