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sabika13
 3 years ago
how do i prove this using trig identity: (2sinx+3cosx)^2+(3sinx2cosx)^2=13
sabika13
 3 years ago
how do i prove this using trig identity: (2sinx+3cosx)^2+(3sinx2cosx)^2=13

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jennyjewell25
 3 years ago
Best ResponseYou've already chosen the best response.0i did this on my calculator type it in your calulator just as your type on here tell me what you get

sabika13
 3 years ago
Best ResponseYou've already chosen the best response.0i have to prove it using trigonometric identity without a calculator

wio
 3 years ago
Best ResponseYou've already chosen the best response.0First, use foil to expand them. Then use the following identity \[ \sin^2(\theta)+\cos^2(\theta)=1 \]

sabika13
 3 years ago
Best ResponseYou've already chosen the best response.0what do i do with the leading coefficients?
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