If a flagpole casts a 13ft shadow on the ground when the sun is at 68° angle of elevation, which of the following expressions can be used to determine the height (h) of the flagpole? (assume the flagpole is at a right angle to the ground.) a) cot 68° = h/13 b) cos 68° = h/13 c) tan 68° = h/13 d) sin 68° = h/13

tan 68° = h/13 ⇒ answer (C)

Step-by-step explanation:

∵ The length of the shadow is 13 ft

∵ Angle of elevation of the sun is 68°

∴ The height of the flagpole is opposite to the ∠68°

  and the shadow is adjacent to it

∵ The flagpole is ⊥ to the ground

∴ tan 68° = h/13

2nd one in the first row is correct

a .4y4

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