Evaluate
Triangle
Calculator
Angles
Unit circle
100
Use a calculator to decide whether the statement is true or false. sin(135° + 45°) = sin 135° * cos 45° + cos 135° * sin45°
True
100
Find cos B, write your answer as a fraction in lowest terms. 
cos B = 40/41
100
Use a calculator to find a decimal approximation for the following trigonometric function. sin(-293°6'). Round to eight decimal places.
sin(-293°6') = 0.919821150
100
Find all values of θ in the interval [0° , 360°) that have the given function values. cos θ = -(√3/2)
150,210
100
Without looking at Unit Circle, Find the exact value: Sin 150°
1/2
200
Find the exact values of the given trigonometric function for the angle. tan(-315°)
1
200
Find the exact value for cos θ 
cos θ = 3/5
200
Use a Calculator to find a decimal approximation for the following trigonometric function. sec67°54'. Round to eight decimal places.
2.65798913
200
Find all values of θ in the interval [0°,360°) that have the given function value. cos θ = -(√2/2)
135,225
200
Without looking at Unit Circle, Find the exact value: cos 300°
1/2
300
Use a calculator to decide whether the statement is true or false.
sin (195 + 120) = sin 195 * cos 120 + cos 195 * sin 120
true
300
Find Angle A in the right triangle. Round to three decimal places. a = 3 cm, b = 1.2 cm, C = 90°
A = 68.199°
300
Find a value of θ in the interval [0°,90°] that satisfies the given statement. tan θ = 0.88714215. Round to six decimal places.
θ = 41.577584
300
Find all values of θ in the interval [0° , 360°) that have the liven function value. tan θ = √3/3
θ = 30,210
300
Without looking at Unit Circle, Find the exact value: tan 225°
1
400
Evaluate. 4cot^2 45°+tan^4 240°-5sin^4 180°
13
400
A 13.5-m fire truck ladder is leaning against a wall. Find the distance d the ladder goes up the wall (above the fire truck) if the ladder makes an angle of 33° 41' with the horizontal. Round to the nearest hundredth.
d = 7.49 m
400
Find a value of θ in the interval [0°,90°] that satisfies the given statement. csc θ = 1.5806444. Round to six decimal places.
39.246155
400
Find all values of θ, if θ is in the interval [0° , 360°) and has the given function value. csc θ = √2
45,135
400
Without looking at the Unit Circle,
Find exact value: cos -120°
-1/2
500
Evaluate:
3tan^2 240°+3sin^2 210°- cos^2 360°
35/4
500
A contractor needs to know the height of a building to estimate the cost of a job. From a point 95 feet away from the base of the building, the angle of elevation to the top of the building is found to be 48°55'. Find the height of the building. Round your answer to the hundredths place.
108.96
500
Find a value of α in [0° , 90°] that satisfies the given statement. sec α = 1.1380033. Round to six decimal places.
28.510210
500
Find all values of θ, if θ is in the interval [0° , 360°) and has the given function value. sec θ = 2√3 / 3
30 330
500
Find exact value: sin (-2820°)
(√3 /2)