Suppose that cos(θ)=20/29 and 0≤θ≤π/2. Sketch a right triangle with an interior angle measure of θ radians. Since cos(θ)=20/29, you can write down the lengths of two sides of the right triangle.

Using your diagram from part (a), determine the exact value of sin(θ). Enter your answer as a fraction.
sin(θ)= 

Using your diagram from part (a), determine the exact value of tan(θ). Enter your answer as a fraction.
tan(θ)=

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Can someone explain the elimination method to me for this problem?

Demonstrate the proof of your new polynomial identity through an algebraic proof and a numerical proof in an engaging way! make it so the whole world wants to purchase your polynomial identity and can't imagine living without it! you must: label and display your new polynomial identity prove that it is true through an algebraic proof, identifying each step demonstrate that your polynomial identity works on numerical relationships create your own using the columns below. see what happens when different binomials or trinomials are combined. square one factor from column a and add it to one factor from column b to develop your own identity. column a column b (x − y) (x2 + 2xy + y2) (x + y) (x2 − 2xy + y2) (y + x) (ax + b) (y − x) (cy + d)

What value of x will make the triangles similar by the sss similarity theorem?