Trig Round 2 Grade 11
What is the reciprocal identity of sine?
cosecant (csc)
What is the reciprocal identity of cosine?
secant (sec)
What is the reciprocal identity of tangent?
cotangent (cot)
What does tanx equal?
sinx / cosx
What does sin^2 x + cos^2 x equal?
1
What does 1-cos^2 x equal?
sin^2 x
What does 1-sin^2 x equal?
cos^2 x
What does tan^2 x + 1 equal?
sec^2 x
What does cot^2 x + 1 equal?
csc^2 x
If the opposite and adjacent sides of a right triangle are equal, what kind of triangle is it?
90-45-45
What is the side length across from 30 degrees?
1
What is the side length across from 60 degrees?
sqrt(3)
What is the hypotenuse in a 90-60-30 special triangle?
2
What is the side length across from 45 degrees?
1
What is the hypotenuse in a 90-45-45 special triangle?
sqrt(2)
In what quadrants are sine and cosecant positive?
1 and 2
In what quadrants are cosine and secant positive?
1 and 4
In what quadrants are tangent and cotangent positive?
1 and 3
What happens if a side is shorter than the height of a triangle?
No triangle
What happens if a side and the height of a triangle are equal?
Right Triangle
What happens if a side is more than the height but less than the other side of the triangle?
Ambiguous case 2 triangles
What if the side of a triangle is less than the height?
Oblique triangle
What if the sides of an obtuse angle triangle are equal?
No triangle