Question

17) State a and b if ( 2 + 3i)(2-3i) a) a = 1, b = 3 b) a =13 , b =0 c) a =4, b=7 a d) a= 5, b=0 a=​

Answer 1

Answer:

Let AE be a pole of 10 m and BD be the another pole of 16 m and DE be the wire.

From the figure,

CD=16−10=6 m

Now,

In △CDE,

sin30 ∘ = DE/ CD

DE=2×6=12 m.