Sides of `triangleABC, AB=7 cm, BC=5cm, CA=6cm`. A pole is stand at mid point of side `AC`. Angle of elevation of pole from vertex `B` is `30^@`, find height of pole (a) `sqrt7/sqrt3` (b) `(2sqrt7)/sqrt3` (c) `2sqrt21` (d) `2sqrt7`

Construct a triangle ABC in which AC=5cm, BC= 7 cm and AB= 6cm. Mark D, the mid-point of AB

(sqrt(7)+2sqrt(3))(sqrt(7)-2sqrt(3))

If (3 + sqrt7)/(3 - sqrt7) = a + bsqrt7 , then ( a , b ) =

Find the value of m and n : if : ( 5+ 2sqrt3)/( 7+ 4sqrt3) = m + n sqrt3

Find the angle of elevation of the Sun when the shadow of a pole h m high is sqrt3 h m long.

In triangleABC right angled at C. AB= 1.7 cm, BC= 1.5 cm, find CA

The angle of elevation of the sun when the length of the shadow of a pole is sqrt(3) times the height of the pole is

A pole 6 m high casts a shadow 2 sqrt 3 m long on the ground, then find the angle of elevation of the sun.

AB is a vertical pole with B at the ground level and A at the top. A man finds that the angle of elevation of the point A from a certain point C on the ground is 60o . He moves away from the pole along the line BC to a point D such that C D""=""7""m . From D the angle of elevation of the point A is 45o . Then the height of the pole is (1) (7sqrt(3))/2 1/(sqrt(3)-1)m (2) (7sqrt(3))/2 sqrt(3)+1m (3) (7sqrt(3))/2 sqrt(3)-1m (4) (7sqrt(3))/2 sqrt(3)+1m

If a = sqrt3, b = (1)/(2) (sqrt6 + sqrt2), and c = sqrt2 , then find angle A