HELP, PRE-CALC QUIZ PLEASE!!! EMERGENCY!!!?
Use the given information to find the exact value of each of the following:
sin2theta
cos2theta
tan2theta
sintheta= 3/11 , theta lies in quadrant 2
Brianna---
Is it sin^2(theta) or sin(2*theta)..etc.
sin(theta) = 3/11 means the opposite side is 3 and hypotenuse is 11. You can figure out what cos(theta) is by Pythagorean Theorem and remembering that cos(theta) is negative in 2Q.
then tan(theta) is also negative in Q2.
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Answers & Comments
Brianna---
Is it sin^2(theta) or sin(2*theta)..etc.
sin(theta) = 3/11 means the opposite side is 3 and hypotenuse is 11. You can figure out what cos(theta) is by Pythagorean Theorem and remembering that cos(theta) is negative in 2Q.
then tan(theta) is also negative in Q2.