Trignometry Trivia

(sec A + tan A) (1 – sin A) =

• sec A

• sin A

• cosec A

• cos A

The shadow of a tower standing on a level ground is found to be 40 m longer when the Sun's altitude is 30° than when it is 60°. Find the height of the tower.

• 10√3 m

• 20√3 m

• 15√3 m

• 30√3 m

Tags

CCSS.HSG.SRT.C.8

The length of the shadow of a 40 m tall pole on the ground when the sun's elevation is 45? is

• 40 m

• 40√3 m

• 20 m

• 20√3 m
  

Tags

CCSS.HSG.SRT.C.8

The angle of elevation of the top of a vertical tower from a point on the ground is 60°. From another point 10 m vertically above the first, its angle of elevation is 30°. The height of the tower is

• 25 m

• 20 m

• 10 m

• 15 m

Tags

CCSS.HSG.SRT.C.8

If the length of the shadow of a tower is equal to its height, then the angle of elevation of the sun is

• 30°

• 45°

• 60°

• 55°

Tags

CCSS.HSG.SRT.C.8

If 3 sec A - 5 = 0 then cot A = ___

• $\frac{3}{4}$

• $\frac{4}{5}$
  

• $\frac{5}{3}$
  

• $\frac{3}{5}$
  

Tags

CCSS.HSF.TF.A.2