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Subject: Maths, asked on 11/2/16

a girl of height 150cm stands in front of a lamp post and casts a shadow of length 150root3cm on the ground.find the angle of elevation of the top of the lamp post.

Subject: Maths, asked on 28/5/16

Evaluate 1/4(cot^4 30 degree- cosec^4 60 degree)+3/2(sec^2 45 degree-tan^2 30 degree-5cos^2 60 degree

Subject: Maths, asked on 18/4/14

prove the following identities :sin theta/1 - cos theta = cosec theta + cot theta

Subject: Maths, asked on 15/9/16

sin4A/sin5A=tan4A then A=

Subject: Maths, asked on 15/4/17

Ratna sagar book 10 maths answe r solitions

Subject: Maths, asked on 22/9/15

give me the proof of all trigonometric identities

Subject: Maths, asked on 23/12/14

A man on deck of a ship 14m above the water level observes that the angle of elevation of the top of a cliff is60and the angle of depression of base of the cliff is30 .find the height of the base

Subject: Maths, asked on 9/5/15

I have not received hall ticket for 2015 NTSE exam

Subject: Maths, asked on 12/3/19

A straight highway leads to the foot of a tower . A man standing on the top of
the tower spots a van at an angle of depression of 30 degree. The van is approaching
the tower with a uniform speed. After 6 minutes, the angle of depression of the van
is found to be 60 degree. How many more minutes will it take for the van to reach the
tower?

Subject: Maths, asked on 14/2/15

i still dont understand the concept of heights .please help me....

Subject: Maths, asked on 12/5/17

The value of sin square 65 degree + sin square 25 degree + cos square 35 degree + cos square 55 is

Subject: Maths, asked on 10/4/18

If A is an acute angle of triangle ABC,right angled at B,then the value of sinA + cosA is __. a) less than 1 b) equal to one c) equal to two d) greater than one

Subject: Maths, asked on 27/5/16

Cos^2 30 degree.cos^2 45 degree +4sec^2 60 degree +1/2 cos^2 90 degree-2tan^2 60 degree

Subject: Maths, asked on 28/5/16

Find A and B,if sin (A+B)=1 and cos(A-B)=1

Subject: Maths, asked on 3/11/17

Cos6A-cos4A/sin6A+sin4A=tanA

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