You know it will be in quadrant 2 where cos is negative
cos^2-sin^2 = 25/169 - 144/169 = -119/169
I just want to know if this answer is correct, 120/169.
Use identities to find the indicated value for each angle measure.
sin θ = 12/13, cos θ > 0
Find cos (2θ).
2 answers
Cos0= -3/5 where pie over 2 _<0 < pie
Fin tan 20 could you explain how to get the answer?
Fin tan 20 could you explain how to get the answer?
1 answer