Question
A man observes the top of a lighthouse from a point on
the ground 30 m away from its base. If the angle of elevation is 60°, what is the height of the lighthouse?Solution
Formula Used: Height of the lighthouse = Distance from the base × tan(angle of elevation) Calculation: tan(60°) = √3 ≈ 1.732 ⇒ Height of the lighthouse = 30 × 1.732 ⇒ Height of the lighthouse ≈ 51.96 m The height of the lighthouse is approximately 51.96 m.
Sec A -Tan A = 1/16 then find the value of cot A =?
A man observes the top of a tower at an angle of elevation of 30°. He walks 100 meters closer to the tower, and the angle of elevation becomes 60°. If...
if 8 sin 2 x + 3 cos 2 x = 4  then find tan x
What is the value of cos75°?Â
sin2 7 ° + sin2 8 ° + sin2 9 ° + sin2 10 ° + ……… + sin2 83 ° = ?
...Solve for x in the interval [0, 2π]: 2 sin²x + 3 sinx - 2 = 0.
If X = 15°, find the value of:
sin²(4X) + cos²(3X) - tan²(2X)If sin5A = cos(2A+20°), then what is the value of A? Given that 5A is an acute angle.
A flagpole stands on top of a building. From a point 50 meters away from the base of the building, the angle of elevation to the top of the building is ...
Relevant for Exams:
