t h e space a n g l e space o f space e l e v a t i o n space o f space j e t space p l a n e space f r o m space a space p o i n t space t o space t h e space g r o u n d space i s space 60 space d e g r e e. space a f t e r space a space f l i g h t space o f space 15 space s e c comma space space t h e space a n g l e space o f space e l e v a t i o n space c h a n g e s space t o space 30 space d e g r e e colon i f space j e t space p l a n e space i s space f l y space a t space c o n s tan t space h e i g h t space o f space 1500 root index blank of 3 m space space comma space f i n d space t h e space s p e e d space o f space p l a n e end root
space space space space space

Asked by regeliscus987 | 1st Jun, 2019, 01:59: PM

Expert Answer:

angle AOB equals 60 degree
so space in increment AOB
OB equals 1500 square root of 3 space end root cot space 60 equals 1500
angle AOB equals 30 degree
so space in increment straight A apostrophe OB apostrophe
OB apostrophe equals 1500 square root of 3 space end root cot space 30 equals 4500
BB apostrophe equals OB apostrophe minus OB
equals 3000
Distance space equals space 3000 space straight m
time space equals space 15 space straight s
speed space equals 3000 divided by 15 space equals space 200 space straight m divided by straight s

Answered by Arun | 3rd Jun, 2019, 01:54: PM

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