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Trigonometry

Tiny Trig Test

A test by Oren Lahav.

Test Questions

Question

According to Pythagorean's theorem, which of these are true for a right angled triangle with hypotenuse b and sides a and c?

Answers

Correct	Answer Text
	a+c=b
	a ^ 2 + c ^ 2 = b ^ 2
	a ^ 2 + b ^ 2 = c ^ 2

Question

For a certain angle A, (sin A) ^ 2= 0.75. What does cos A equal?

Answers

Correct	Answer Text
	0.5
	0.67
	0.25

Question

My triangle has a side of sqrt2 and and an angle opposite it of 45 degrees, but it's not a right triangle. What's the ratio of side B over the sin of angle B in that triangle?

Answers

Correct	Answer Text
	Impossible to determine
	2
	sqrt2

Question

Which of these can be the 2 missing angles in my right triangle?

Answers

Correct	Answer Text
	26, 64
	27, 72
	35, 65

Question

The cosine value of angle A cos A =0.5 What does that mean about hypotenuse H and adjacent side D?

Answers

Correct	Answer Text
	H=1, D=2
	Nothing can be concluded yet
	H/D = 1/2

Question

My right triangle has 2 short sides of 12 and 5. What are the missing angles in that triangle?

Answers

Correct	Answer Text
	22.6 and 67.4
	42.3 and 47.7
	11.9 and 78.1

Question

Which of the tan, sin and cos functions are periodic and have the value of 0 at x=0?

Answers

Correct	Answer Text
	sin, tan
	Just sin
	cos, tan

Question

Where would the first asymptote be on the tan function to the right of the x-axis?

Answers

Correct	Answer Text
	At 90 degrees (since you can't tan the right angle)
	At 45 degrees (since that gives a value of 0)
	At 180 degrees (since that's too much degrees for a triangle)