Maths A level Trigonometry Question

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abovethecl0uds
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I don't know what to do after this.. Please could anyone help me out? Thanks in advance
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mqb2766
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(Original post by abovethecl0uds)
I don't know what to do after this.. Please could anyone help me out? Thanks in advance
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tan(pi/4) is a well known / simple.
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abovethecl0uds
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(Original post by mqb2766)
tan(pi/4) is a well known / simple.
Oh yes! tan(pi/4) = 1
I calculated tan(x) to be -2
I'm not sure if that's right though, since the question is asking for an exact value, it seems like the answer should be a surd or a fraction, rather than a whole number.
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mqb2766
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(Original post by abovethecl0uds)
Oh yes! tan(pi/4) = 1
I calculated tan(x) to be -2
I'm not sure if that's right though, since the question is asking for an exact value, it seems like the answer should be a surd or a fraction, rather than a whole number.
tan(pi/4) is a whole number. Sometimes trig values are. You can check by subbing it back into the original equation / addition identity.
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abovethecl0uds
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(Original post by mqb2766)
tan(pi/4) is a whole number. Sometimes trig values are. You can check by subbing it back into the original equation / addition identity.
It works! Thanks so much for your help
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