18 ) If sin θ = ⅘ then find cos θ.
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Answered by
0
Answer:
sin A=4/5
then cosA=3/5
Answered by
21
Given
- Sin θ = ⅘
To find :
- Cos θ
Solution :
Trigonometry identities
cos² θ = 1 - sin²θ .
Now ,
Therefore ,
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