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4 cards from this section. Quick, good the night before a test.
Calculate the opposite side if the hypotenuse is 20 cm and θ = 30°.
Use the sine formula.
If the adjacent side is 4 cm and θ = 60°, what is the hypotenuse?
Consider the cosine function.
What is the sine of 30 degrees?
It's the ratio of the opposite side to hypotenuse.
If the adjacent side is 7 cm and angle θ = 45°, what is the hypotenuse?
Use the cosine function.
A ladder reaches 15 meters at an angle of 75º from the ground. How high does the ladder reach on the wall?
Use the sine function.
From a point on the ground, the angle to the top of a 20 m tower is 60°. What is the distance from the point to the base of the tower?
Use the tangent ratio.
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