if sin a =3/5 find cos A, tan A, sec A, and cosec A?
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sin A =3/5
perpendiular=3 , hypotenuse=5
5^2 = 3^2+ base^2
25 =9 + b^2
b^2=25-9
b=√16
b=4
cosA = b/h
=4/5
tanA = p/b
=3/4
secA = h/p
= 5/3
cosec A = h/b
= 5/4
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Answer:
Given : sin A=
To find : cos A, tan A , sec A and cosec A
Solution :
Let ∆BAC be the required rt. triangle.
sin A =
Using Pythagoras's Theorem;
Putting values in the above equation;
(Base)² = (5x)² - (3x)²
Base = 4x
Hence,
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