Edexcel as maths P2 new spec 2019 18th June Watch

Zebin mehrin
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Can anybody explain me how do u solve trig equations for different angle range ?
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Zebin mehrin
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Size:  65.4 KB Such as these problems??? Any help is appreciated!
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Maximus 190
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Draw the graph, include the significant angles. Then work out where 0.7 roughly goes through the line between the 80° and 440°. Then use the symmetry to work out the value(s). That probably doesn’t help , but just draw the graph and you may follow.
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Zebin mehrin
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if it does't trouble u much can u plss show how to work out the following above ? can u write it in a paper and show plzz ?
(Original post by Maximus 190)
Draw the graph, include the significant angles. Then work out where 0.7 roughly goes through the line between the 80° and 440°. Then use the symmetry to work out the value(s). That probably doesn’t help , but just draw the graph and you may follow.
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Maximus 190
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Hope this helps a little,

I did the final question. I added 180° to the principal value of x = 70.97 as the tan function repeats every 180° so tan(x) = tan(x 180), until you get all of the values within the range given.
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Zebin mehrin
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thanks a lot dear ...
(Original post by Maximus 190)
Hope this helps a little,

I did the final question. I added 180° to the principal value of x = 70.97 as the tan function repeats every 180° so tan(x) = tan(x 180), until you get all of the values within the range given.
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Maximus 190
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(Original post by Alisia123456)
thanks a lot dear ...
No problem. It may seem that drawing a graph for the values seems redundant, for tan yes as you just add 180° but for other functions it’s not so simple so drawing it out and looking at the symmetry can make it much easier.
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