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Studentc14
 2 years ago
Help please!
sin(90˚)
Studentc14
 2 years ago
Help please! sin(90˚)

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ghazi
 2 years ago
Best ResponseYou've already chosen the best response.2well, sin (theta)=  sin theta, therefore sin (90) = 0.8939 or approximately 1

Studentc14
 2 years ago
Best ResponseYou've already chosen the best response.0but how do you know it is 1 without a calculator

ghazi
 2 years ago
Best ResponseYou've already chosen the best response.2well you have to calculate the value by this triangle, i assume that triangle of sides 1 unit and when you find any sine angle in that triangle and you use the limits in that you will get it around 0.89 or approximately 1, but when sine is ve your value will be 1

Studentc14
 2 years ago
Best ResponseYou've already chosen the best response.0i dont understand this. how is there a triangle where the hypotenuse is 1?

ghazi
 2 years ago
Best ResponseYou've already chosen the best response.2well if you just talk about a triangle where hypotenuse could be one , then you can use a triangle where sides are \[\frac{ 1 }{ \sqrt2 }\] but in this case consider an example dw:1369862687154:dw when theta 2= theta 1 and z=y , we have assumed y = x and when z=y then ratio of y/z will be =y/y and hence sin theta =1

reemii
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1369863251318:dw therefore, dw:1369863295912:dw
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