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Ram97

Yup they were 0,101.3 and 180

Dark Destination

But how, the question you told:

2cos^2y + sin y = 1

Gives different answers than those! Solve it.

Ram97

This was the second part.
First part was which had tanx and it had answers 0, 101.3 and 180

Ram97

Second one kay answers were 30, 150, 210 and 330

Dark Destination

Even if it was the second part, if you solve it those aren't the answers.

Was the first part originally given in form of tan, or did we need to make it into tan?

Ram97

First part was originally in form of tan. In second part identity was applied and cos^2 was changed into sin^2

Dark Destination

But i specifically remember the first part being about changing cos^2 to sin^2 :/

Dark Destination

Do you remember the exact first part in terms of tan?

Ram97

Forget whether it was the first part or the second part. Did u get the correct answers??

Dark Destination

All, i know is i didn't REJECT any of the answers. Did you?

Ram97

tan had range from 0 < x < 180 inclusive
cos^2 had range from 0 < x < 360

Dark Destination

Yes, i know that. So i agree, the second part was about the identity..

But tan part. Did we have to reject any of the answers there?

Ram97

Yeah we would reject 270 and 360 as they were out of range and one more

Dark Destination

Why don't you remember the tan question?

Ram97

I do remember some part of the question. Let me solve it and i'll tell u the whole qs

Dark Destination

Yes, do tell me when you figure out the question. The first part.

But you are saying that second part was 2 cos^2y + sin y = 1
With that, the answer comes 30, 150, 270..

Not the ones you are saying.

Ram97

Maybe it was -siny. Let me try

Ram97

first part was
tan^2 x + 5tanx=0

Ram97

But the problem is that I'm not getting the two other answers for part which I found during the paper :/

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