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SugarRainbow

  • 2 years ago

without using a calculator find sin beta and cos beta if tan beta=3/4 and sin beta= >0.

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  1. satellite73
    • 2 years ago
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    think of a 3 - 4 - 5 right triangle, take the appropriate ratios

  2. SugarRainbow
    • 2 years ago
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    how did you get 3-4-5?

  3. satellite73
    • 2 years ago
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    |dw:1347251372575:dw|

  4. SugarRainbow
    • 2 years ago
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    oh wait isn't tangent like the adjacent angles or something?

  5. satellite73
    • 2 years ago
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    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
    • 2 years ago
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    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
    • 2 years ago
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    okay umm so whats sin?

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