Start learning 50% faster. Sign in now
Let the length of the lighthouse = BD m Use this property - When the angles of a triangle are 30 ° ,60 ° , and 90° respectively, the ratio of the opposite sides is 1: √ 3:2. When Triangle BDC – The opposite side of angle 30° = 1 Similarly - angle 60° = √ 3, and angle 90° =2 Triangle ABD -opposite side of angle 30 ° =BD = 1= √ 3……. means √ 3times. so -opposite side of angle60° =AD = √ 3 = √ 3× √ 3 =3 now – AD + DC = AC 4= 230 √ 3 1= (230 √ 3)/4 Now height = BD = √ 3= (230 √ 3/4) × √ 3= (230 ×3)/4 =690/4 =172.5meter
Consider the following statements about Project Kuiper:
1. Amazon recently signed an agreement with NASA to support this Project.
Cryogenic engines are primarily used in which field?
Who was the third astronaut to travel to the Moon alongside Neil Armstrong and Buzz Aldrin?
The part of the flower which is present in the centre of the flower is
Who discovered the virus?
Which moon is the smallest in the solar system?
Which pair of following is of Copper alloys?
_________ is a good conductor of heat, but a bad conductor of electricity.
Which element is most abundant by mass in the earth's crust?