If tanA= 3/4 find the value of SinA and Cos A
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If tan A = 3/4 = P/B
let perpendicular be 3x units.
and base be 4x units.
By Pythagoras Theorem,
H²=P²+B²
H²= (4x)²+(3x)²
H²=16x²+9x²
H²=25x²
H=√25x²
H=5x
ATQ,
1. Value of Sin A
Sin A = P/H
= 3x/5x
= 3/5
2. Value of Cos A
Cos A = B/H
= 4x/5x
= 4/5
Hope it will Help You.....
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let perpendicular be 3x units.
and base be 4x units.
By Pythagoras Theorem,
H²=P²+B²
H²= (4x)²+(3x)²
H²=16x²+9x²
H²=25x²
H=√25x²
H=5x
ATQ,
1. Value of Sin A
Sin A = P/H
= 3x/5x
= 3/5
2. Value of Cos A
Cos A = B/H
= 4x/5x
= 4/5
Hope it will Help You.....
^_^
^_^
^_^
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