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Daniel J Smith Custom TMUA alpha · Q2

TrigonometryGeometry

A student chooses two distinct real numbers xx and yy with 0<x<y<10<x<y<1.

The student then attempts to draw a triangle ABCABC with

AB=1,cos⁡A=x,cos⁡B=yAB=1,\qquad \cos A=x,\qquad \cos B=y

Which of the following statements is/are correct?

I: For some choice of xx and yy, there is no such triangle.

II: For some choice of xx and yy, there is exactly one such triangle.

III: For some choice of xx and yy, there are exactly two such triangles.

Note that congruent triangles are considered to be the same.

Anone of them
BI only
CII only
DIII only
EI and II only
FI and III only
GII and III only
HI, II and III

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