Math 12

Simplify #1:
= cscx((1)tanx)/sinx+cosx
= cscxtanx/sinx+cosx

Is the correct answer cscxtanx/sinx+cosx?

Simplify #2:
= ???

I'm stuck on this one. I don't know what I should do.

Simplify #3:
= cosx-(sin90cosx-cos90sinx)sinx/cosx-(cos180cosx+sinx180sinx)tanx
= cosx-sin90cosx+cos90sinxsinx/cosx-cos180cosx-sinx180sinxtanx
= cosx-sin90cosx+cos90sin^2x/cosx-cos180cosx-sinx180sinxtanx
= ???

What do I do next?

Please help and Thank you

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  1. #1:
    cscx = 1/sinx
    tanx = sinx/cosx

    Your answer can be simplified further using the above identities.

    This one looks simplified as is.

    I'll let someone else help you with this one.

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