Register
PLEASE HELP THIS IS TRIGONOMETRY!!!
8.7k views
5 votes
PLEASE HELP THIS IS TRIGONOMETRY!!!

PLEASE HELP THIS IS TRIGONOMETRY!!!-example-1
User Glenny
by
6.3k points

1 Answer

9 votes

Answer:

7/25

Explanation:


cos2θ = 1 - 2 {sin}^(2) θ \\ = 1 - {2(sinθ)}^(2) \\ = 1 - {2 ((3)/(5)) }^(2) \\ = (7)/(25)

User Fatumata
by
6.0k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

6.2m questions

8.1m answers

Other Questions

Solve using square root or factoring method plz help!!!!.....must click on pic to see the whole problem
WILL UPVOTE EVERY ANSWER! MULTIPLE CHOICE! Solve for Y. 8-8y=2y+78 A)y=7 B)y=70 C)y=-7 D)y=-70
Help me please!! asap!
Help me pls. I will give you 16 points Please
If the discriminant of a quadratic equation is equal to -8, which statement describes the roots? A.) There are two complex roots. B.) There are two real roots. C.) There is one real root. D.) There is
Link Copied!