De only way , you can learn maths is that..
- Avoid the perception that maths is a difficult subject
- Always do more calculations
- Try to solve the Same question that your tutor give to you during your leisure time.
Answer:
15
Step-by-step explanation:
need more information to answer
Answer:
- 2/5x=7/20x+1/4
- -3/4=-1/20x-1/2
- -3/4+1/20x=-1/2
Step-by-step explanation:
If you add 3/4 to both sides of the equation, you get ...
... 2/5x = 7/20x + 1/4 . . . . first choice
If you subtract 2/5x from both sides of the equation, you get ...
... -3/4 = -1/20x -1/2 . . . . third choice
If you subtract 7/20x from both sides of the equation, you get ...
... -3/4 +1/20x = -1/2 . . . . last choice
Choices 2 and 4 are erroneous versions of choices 1 and 3, so do not apply.
Answer:
![sin(t)=\frac{\sqrt{99}}{10}](https://tex.z-dn.net/?f=sin%28t%29%3D%5Cfrac%7B%5Csqrt%7B99%7D%7D%7B10%7D)
Step-by-step explanation:
Remember that
If angle t belong to the First Quadrant
then
The value of sin(t) and cos(t) are positive values
we know that
---> by trigonometric identity
we have
![cos(t)=0.1=\frac{1}{10}](https://tex.z-dn.net/?f=cos%28t%29%3D0.1%3D%5Cfrac%7B1%7D%7B10%7D)
substitute
![sin^2(t)+(\frac{1}{10})^2=1](https://tex.z-dn.net/?f=sin%5E2%28t%29%2B%28%5Cfrac%7B1%7D%7B10%7D%29%5E2%3D1)
![sin^2(t)+\frac{1}{100}=1](https://tex.z-dn.net/?f=sin%5E2%28t%29%2B%5Cfrac%7B1%7D%7B100%7D%3D1)
![sin^2(t)=1-\frac{1}{100}](https://tex.z-dn.net/?f=sin%5E2%28t%29%3D1-%5Cfrac%7B1%7D%7B100%7D)
![sin^2(t)=\frac{99}{100}](https://tex.z-dn.net/?f=sin%5E2%28t%29%3D%5Cfrac%7B99%7D%7B100%7D)
![sin(t)=\frac{\sqrt{99}}{10}](https://tex.z-dn.net/?f=sin%28t%29%3D%5Cfrac%7B%5Csqrt%7B99%7D%7D%7B10%7D)