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Recall that for a vector
, we have 
. So we have
Recall that for a vector
What is the value of tan(t/2) if cos(t) = 4/5 and t is in quadrant IV?
1 answer:
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(AAA) Corresponding angles are congruent.
Therefore, the sides of the triangles are proportional:
cross multiply
use distributive property
subtract 100 from both sides
divide both sides by 100
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(SAS)
If two sides and the included angle of one triangle are equal to the corresponding sides and angle of another triangle, the triangles are congruent.
Therefore we have the equation:
The perimeter of △PQR:
Substitute the value of y to the expression: