Could someone simplify these plz
A) 5cosx >>* sin^2x - sinxcosx
sin^2x >> * sin^2x cos^2x
B) (tanx + 2)(tanx - 3) - (6 - tanx) + 2 tanx
C) cot - 1
secx - tanx
x = theta
Hello, mortyr!
The first two are just "algebra": multiplying, cancelling, and combining.
We have: .
Multiply top and bottom by
and we have: .
Reduce: .
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Here's another approach . . .
. . guarenteed to impress/surprise/terrify your teacher.
Multiply top and bottom of the fraction by
. .
Since , we have: .
Then we have: .
Since , we have: .
And we have: .