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# AS Mathematics C2 Trigonometry Quetsion Watch

1. Anyone able to give me a solution to:

(sinx-1)(5cosx+3)=0 in the interval 0<x<360
2. (Original post by caitrionacarson)
Anyone able to give me a solution to:

(sinx-1)(5cosx+3)=0 in the interval 0<x<360
What have you tried?
3. (Original post by SeanFM)
What have you tried?
okay so I was trying to expand it and use trig identities to solve it, but you just take them as your factor and have sinx=1 and cosx=-3/5 right? -_-
4. (Original post by caitrionacarson)
okay so I was trying to expand it and use trig identities to solve it, but you just take them as your factor and have sinx=1 and cosx=-3/5 right? -_-
Correct do you know how to find the right x values?
5. (Original post by SeanFM)
Correct do you know how to find the right x values?
yeah x=90, 126.9 and 233.1

Thanks haha
6. (Original post by caitrionacarson)
yeah x=90, 126.9 and 233.1

Thanks haha
good job

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