WMA12/01 (Edexcel) IAL P2 January 2023, Q8, Trigonometric Identities & Equations

[@bonzopippinpaddleopsicopolis]

15:15 use CALC function

[@KungFuBarbie-pc7hb]

Why

[@arfajamil8762]

For sine do we always +/- by 2pi (360)? What if they gave an equation with cosine and tangent... will we +/- by pi (180) for both??

[@mohkh7610]

the +/- 180 is for tan only and for cos you do +/- 360 but there are other ones like 180 - angle for sin and 360 - angle for cos and just in case you don't know not in all trig questions you do the 180 +/- or whatever as you may have to divide 180 by some number x sometimes or multiply it by x so that to do 180x +/- for example and I used 180 as a specific example but it could've been 360 angle - or +/- 360 or +/-180 so if you don't know I'd recommend you to study that part thoroughly

[@arfajamil8762]

@@mohkh7610 ohh I see, tysm!!

[@liza.56]

Iam so confused

[@MrHassaansMathsChannel]

What part is confusing you? If you are having issues with solving trig equations then watch this kzbin.info/www/bejne/iIPXd2mtgbSMhZIfeature=shared

[@liza.56]

@@MrHassaansMathsChannel Sir your explanations are great I love it But the answer is so long which is why its confusing😅 i was confused in a part 'pie - (-0.4115)' and the graph , Thankyou for replying and giving me a Link Thankyou so much for posting past paper vedios It made many content. clear for me 🩷