Ask a Teacher

Search

CBSE->Plus 1 Biology Science Questions

Total Questions 411
From the terrace of a house 8m high,the angle of elevation of the top of a tower is 45 degree and the angle of depression of the bottom is 60 degree.Find the height of the tower and the distance of the tower from the house?
From the top of the building 15m high,the angle of elevation of the top of a tower is 30 degree.from the bottom of the same building,the angle of elevation is 60 degree.determine the height and the distance between the tower and the building?
The height of a tower is half the height of the flagstaff at its top.The angle of elevation of the top of the tower as seen from a distance of 10m from its foot is 30 degree.Find the angle of elelvation of the flagstaff from the same point?
What is a magnetic flux? When it will be maximum in a field?
Why is pure iron not used for making permanent magnets?
Why is pure iron not used for making permanent magnets?
Define agriculture?
PROVE THAT:1+cos theta+sin theta divided by 1+cos theta-sin theta=1+sin theta divided by cos theta?
If x= r sinA cosC, y= r sinA sinC, z= r cosA, Prove that: r square=x square + y square +z square?
without using the trigonometric tables, evaluate: sec 37 divded by cosec 53 + 2 cot 15 cot25 cot 45 cot 75 cot 65-3(sin square 18+sin square 72)?
without using the trigonometric tables, evaluate: cosec square(90-theta)-tan square theta divided by 4(cos square 48+cos square 42)-2 tan square30 sec square 52 sin square 38 divided by tan square 20 - cosec square 70?
prve that : 1 divided by sec theta-tan theta-1 divided by cos theta=1 divided by cos theta-1 divided by sec theta+tan theta?
prove that: cos A divided by 1-tanA+sinA divided by 1-cotA=sinA+cosA?
If sec thaeta+tan theta=p,show that p square -1 divided by p square +1=sin theta?
prove that: cot theta-1+cosec theta divided by cot theta+1-cosec theta=1 divided by cosec theta-cot theta?
Prove that:cos rise to 4 theta-cos square theta=sin rise to 4-sin square theta?
Prove that:tan thata divided by 1-cot theta+cot theta divided by 1-tan theta=1+sec theta cosec theta?
Prove that : tan theta-1+sec theta divided by tan theta+1-sec theta=1 divided by sec theta-tan theta
Prove that: sinA divided by SecA+tanA-1 + cos A divided by cosecA+cotA-1=1?
Prove that (cosecA-sinA)(secA-cosA)=1/tanA+cotA?