THE HELP IVE BEEN RECIEVEING HAS MADE ME SO HAPPY SO I JUST WANNA TAKE THE TIME TO SAY THANK YOU SO MUCH T-T. if anyone can help
me with any of these id be even mord grateful and happy. Literally just one question or some hints, ANYTHING will be appreciated sOOO much!!! Im honestly just pushing my luck right now but oh my gosh you guys helped me so much T-T I know its a bit much, so any problem of your choosing will help me a TON!!!
1 answer:
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<h3>Answer:</h3>
- left picture (bottom expression): -cot(x)
- right picture (top expression): tan(x)
A graphing calculator can show you a graph of each expression, which you can compare to the offered choices.
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You can make use of the relations ...
... sin(a)+sin(b) = 2sin((a+b)/2)cos((a-b)/2)
... cos(a)+cos(b) = 2cos((a+b)/2)cos((a-b)/2)
... cos(a)-cos(b) = -2sin((a+b)/2)sin((a-b)/2)
Then you have ...
and ...