Question

A VSAT tower is set at a levelled ground. For setting up the angel for VSAT the measurement is such that a straight line is drawn from both ends of the dish to the ground. The pillar supporting the VSAT dish is vertical with the ground. If the value of 2 ADC is 60° then answer the following questions??????​

Answer 1

Given : A VSAT tower is set at a levelled ground. For setting up the angel for VSAT the measurement is such that a straight line is drawn from both ends of the dish to the ground. The pillar supporting the VSAT dish is vertical with the ground.  

the value of ∠ADC is 60°

To Find : Value of ∠GDF

Value of ∠BAC &  ∠DAC

Dish is rotated 20 clockwise find value of  ∠DAC

Solution:

∠GDF  & ∠ADC  are vertically opposite angles

=> ∠GDF  =  ∠ADC

∠ADC is 60°

=> ∠GDF  =  60°

∠BAC =   ∠DAC  

As point B lies on DA

∠DAC   & ∠ADC are complementary angles

=> ∠DAC + ∠ADC = 90°

=> ∠DAC + 60° = 90°

=> ∠DAC  = 30°

=> ∠BAC =   30°

∠BAC =   ∠DAC   = 30°

Dish is rotated 20 clockwise  value of  ∠DAC =  30°  + 20°  =  50°

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