Inverse Function Review

When trying to find the angle of a triangle in which Mr. B has given you two sides we would use the _______ of Sin, Cos, Tan

Sin a = 0.6354

• 39.4 degrees
• 50.5 degrees
• 30.1 degrees
• 45.2 degrees

Cos a = 0.9563

• 75.10°

• 17.00

• 30.50°

• 16.96

Tan a = 4.365

• 45.16 degrees

• 60.25 degrees

• 96.34 degrees

• 77.10 degrees

Ella is flying a kite, and the kite is 8 meters above the ground. If she is holding the string 6 meters away from the point directly beneath the kite, what is the angle of elevation from her hands to the kite to the nearest hundredth?

Mathematical Equivalence

ON

If a boat is 150 metres from the base of a cliff that is 90 metres high, what is the angle of elevation from the boat to the cliff top to the nearest hundredth?

Mathematical Equivalence

ON

What is the angle of elevation of a playground slide that is 1.2 m high and has a horizontal length of 2.6 m to the nearest degree?

Mathematical Equivalence

ON

You are placing a ladder against a building. If the ladder is 5.5 metres long and needs to reach a point 3.3 metres up the side of the building, at what angle to the ground should it be positioned? Round your answer to the nearest degree.

Mathematical Equivalence

ON

What is the approximate size of an angle in a right triangle if the ratio of the side opposite the angle to the side adjacent to the angle is 3:5? Round your answer to the nearest degree.

What is the approximate size of an angle in a right triangle if the ratio of the side opposite the angle to the side adjacent to the angle is 7:9? Round your answer to the nearest degree.