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Please Help!!! 5 STARS

Let cos(−θ)=45 and tanθ>0 .

What is the value of sin(−θ) ?

Please Help!!! 5 STARS Let cos(−θ)=45 and tanθ>0 . What is the value of sin(−θ) ?-example-1

2 Answers

6 votes

Answer:


-(3)/(5)

Explanation:

Please Help!!! 5 STARS Let cos(−θ)=45 and tanθ>0 . What is the value of sin(−θ) ?-example-1
User Gregory Frerot
by
7.7k points
2 votes

Answer:

Explanation:

Alright, lets get started.

We know the identity, even/odd

cos(-Θ) = cos (Θ)

Means cos(Θ)=
(4)/(5)

Using triangle method and SOH CAH TOA, please refer the diagram attached

sin(θ)=
(3)/(5)

We know, sin(-Θ)= -sin(Θ)

So, sin (-Θ) =
-(3)/(5)

So the answer is C : Answer

Please Help!!! 5 STARS Let cos(−θ)=45 and tanθ>0 . What is the value of sin(−θ) ?-example-1
User LukeS
by
6.1k points