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An aeroplane is flying at a height of 3000m . An observer finds his angle of elevation to be 60° and after 6 sec it changes to 45°. What is the speed of aeroplane?

Posted by Aditya Mahapatra 6 years, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Yukti Arora 6 years, 10 months ago

Ncert ques ch 6 ex 6.5 .....go for ncert solutions

0Thank You

Armandeep Singh 6 years, 10 months ago

firstly draw AB by supposing its height =3000m then mark 2 angles of elevation 45 degree then 60 degree behind that . Then apply trignometric identities we will get the answer

3Thank You

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CBSE > Class 10 > Mathematics