If sinA=x/y,find the value of cosA×tanA in terms of x and y
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2
Answer:
refer the attachment
Step-by-step explanation:
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Answered by
1
Answer:
x/y
Step-by-step explanation:
Sin A = x/y
Since the hypotenuse is y
By Pythagoras theorem,
y²-x² = the length of the third side
Then cos A = Adjacent side/ hypotenuse
So , cos A = √y²-x²/y
Then, tan A = opp/ adjacent i.e, x/√y²-x²
Therefore, cos A × tan A = √y²-x²/y × x/
√y²-x²
And we get x/y
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