pls help me with this question, been working on it for quite some time but still can't figure it out:
Given cosecA+cotA=3, evaluate cosecA-cotA and cosA.
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pls help me with this question, been working on it for quite some time but still can't figure it out:
Given cosecA+cotA=3, evaluate cosecA-cotA and cosA.
Thus,
Square,
Thus,
Solve for,
.
}{\sin(A)}<br />
)
)(1-\cos(A))}{\sin(A)(1-\cos(A))}<br />
)
}{\sin(A)(1-\cos(A))}<br />
)
}{\sin(A)(1-\cos(A))}<br />
)
}{1-\cos(A)}<br />
)
}{\sin(A)}}<br />
)
}-\frac{\cos(A)}{\sin(A)}}<br />
)
I suspect it's cleaner if you remember relationships between the cosecant and cotangent, but I never do. I always have to look them up.
Okay, you do cos(A).
Hello, wadevala!
We have: .Quote:
Given: ., .evaluate: .
Note that: .
Multiply by
. .
Therefore: .
Quote:
Evaluate:
We have: .
Square: .
. . which simplifies to: .
and we have: .
thx for the different ways of going about solving the qns, i understand it much better now :)