C3 edexcel paper

Surely just solve H = 7

Simplify H and then solve for t.

Hmm. I still don't get it. I've attached the mark scheme for it. Look at the one before the last sentence. Can you see how they subtracted it by pi.?


Posted from TSR Mobile

They found the second solution.

To find second solutions:

For $sinx$ you do $\pi -$"first solution"
For $cosx$ you do "first solution"
For $tanx$ you do $\pi +$"first solution"

THANKS! do you also know hey they got to 14.06 and 18.43?

Sorry do check my edit, the latex screwed up. It should be $2\pi$-"first solution" for $cosx$

As for the times, get the full answer using your calculator i.e 4.4525 (random number)
Add everything on the left hand side of the decimal point to the hours, so for my example it would be 12:00 + 4 = 16:00
And then multiply everything on the right hand side of the decimal point by 60 to find the minutes. So (0.4525 x 60) + 16:00 = 16:27