## SugarRainbow Group Title without using a calculator find sin beta and cos beta if tan beta=3/4 and sin beta= >0. one year ago one year ago

1. satellite73 Group Title

think of a 3 - 4 - 5 right triangle, take the appropriate ratios

2. SugarRainbow Group Title

how did you get 3-4-5?

3. satellite73 Group Title

|dw:1347251372575:dw|

4. SugarRainbow Group Title

oh wait isn't tangent like the adjacent angles or something?

5. satellite73 Group Title

you have tangent it $$\frac{3}{4}$$ draw the above triangle, you get the hypotenuse is 5 either by pythagoras or by memory

6. satellite73 Group Title

no, it is not adjacent angles. if you are using right triangle trig, tangent is the length of the "opposite" side over the "adjacent" side

7. SugarRainbow Group Title

okay umm so whats sin?