Question #dcedf
2 Answers
Solution obtained Graphically... see below and explanation
Solution set on
Explanation:
Given:
Required: The solution to
over
Solution Strategy:
a) Use trigonometric identity -
b) Solve the rational function resulting from a) by any means necessary...
a) Substituting
1)
substitute
2)
b) Solve 1) form directly or 2) form indirectly
I have chosen to so solve form 1) graphically see below:
Over
You also cam graph, #r(theta)=cos^(2)2theta -sin2theta and locate the zeros, x intercept...
Get the same answer (.333, 0) and (1.238,0)
Good luck!
Explanation:
Cross multiply -->
Solve this quadratic equation for sin 2t.
There are 2 real roots:
a.
b.
sin 2t = 0.62. Calculator gives -->
Trig unit circle gives another arc 2t that has the same sin value
Answer for
1