Which of the following equations could be used to solve for x in the triangle shown? tan48°=10/x sin48°=10/x cos48°=x/10rtt_l10_hx. gif

Acronym to remember the 3 basic trigonomic functions: 

Soh - Cah - Toa 

             opposite
sin =
            hypotenuse

              adjacent 
cos =
             hypotenuse

             opposite 
tan =  
             adjacent 

In your case, you can set up a sine trigonomic function, like this: 

Sin 48 = 10      (adjacent)
                 
                 x       (hypotenuse)

                       10
 (x) Sin 48 = (x)
                         x

  (x) Sin 48 = 10 
     
  Sin 48         Sin 48 

Plug in 10(sin)(48) into a calculator.

x = 7.43

I just realized that you didn't ask me to find the answer, but now you will know even more than you need to :D

The full question isn’t shown. part of it is cut off

Answer: d. 39 cmin the diagram, the approximate length of the minor arc de is 39 centimetres.step-by-step explanation: the formula for the length of an arc in a circle is as displayed below.let the length of the minor arc de = xx = 2( pi )r × angle of sector / 360°from this, we will substitute the values given from the problem into the formula to obtain the length of the minor arc de.x = 2( pi )r × angle of sector / 360°r = radius = 25cmpi as an approximate value = 3.14angle of sector = 120°x = 2( 3.14 )( 25 ) × 120° / 360°x = 157 × 1 / 4x = 39.25x = 39 ( rounded to the nearest whole number as an approximate value )