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tangare [24]
3 years ago
7

What is the arc of DE ? Please help

Mathematics
2 answers:
Anettt [7]3 years ago
5 0

Answer:

DE = 62°

Step-by-step explanation:

An angle that lies outside a circle and whose sides are 2 secants of the circle is calculated using

∠DAE = \frac{1}{2} (arcDE - arcBC ), that is

12 = 0.5 (DE - 38) ( multiply both sides by 2 )

24 = DE - 38 ( add 38 to both sides ), hence

DE = 62°

elena-14-01-66 [18.8K]3 years ago
3 0

Answer:

45dc

Step-by-step explanation:

Im not sure from the answer

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Two 120 resistors are connected in parallel across voltage supply of 10 vdc what’s the current in this circuit
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Step-by-step explanation:

This is an applied mathematics question

Resistors in parallel  ⁾/R = ¹/₁₂₀ + ¹/₁₂₀ since the resistor is two 120

Therefore , resolve into fraction now yield

                       ¹/R                              =         1 + 1  

                                                                    -------

                                                                     120

                                                          =         2/120

                                                          =          ¹/₆₀

Therefore,                                  ¹/R   =      ¹/₆₀

 Cross multiply to get R the resistance

                                                      R  =  60

From formula,                                V = IR where I is the current

There fore making I the subject of the formula

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                                                          = 10/60

                                                          = 0.166

                                                          = 0.167 A, A = ampere which is the unit of current.

                   

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