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TRIGONOMETRY AND BEARING

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What is the angle between the line of sight and the horizontal when looking up called?

A Angle of elevation B Angle of depression C Bearing D Sector angle

Which of the following is a Pythagorean identity?

A sin² θ + cos² θ = 1 B tan² θ + 1 = sin² θ C 1 + cot² θ = sec² θ D sin θ cos θ = 1

What is the value of sin 90°?

A 1 B 0 C 1/2 D √3/2

A ship travels 8 km east and then 6 km north. What is the bearing of the ship from the starting point?

A 036.87° (approx.) B 053.13° (approx.) C 126.87° (approx.) D 306.87° (approx.)

What is cot θ in terms of sin θ and cos θ?

A cos θ / sin θ B sin θ / cos θ C 1 / sin θ D 1 / cos θ

What is the value of cos 60°?

A 1/2 B √3/2 C 1/√2 D 1

What is the area of a sector with radius 4 cm and angle 90°?

A 4π cm² B 2π cm² C 8π cm² D 16π cm²

What is the perimeter of a sector with radius 7 cm and angle 60°?

A (14 + 7π/3) cm B (7 + 7π/3) cm C (14 + 14π/3) cm D (7 + 14π/3) cm

What is the angle of elevation from a point on the ground to the top of a building if the observer looks up?

A The angle above the horizontal line B The angle below the horizontal line C The angle between the building and the ground D The angle between the observer and the building

What is the bearing of West?

A 270° B 180° C 090° D 360°

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