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RadEn
 one year ago
Best ResponseYou've already chosen the best response.0then use the formula : cos(AB) = cosAcosB + sinAsinB

RadEn
 one year ago
Best ResponseYou've already chosen the best response.0here given A=45 and B=30 degrees

mitchelsewbaran
 one year ago
Best ResponseYou've already chosen the best response.0cos 45cos30 +sin45cos30?

RadEn
 one year ago
Best ResponseYou've already chosen the best response.045 and 30 are the special angles.. u have to remember the values of sin and cos for angles 30 and 45 degrees

mitchelsewbaran
 one year ago
Best ResponseYou've already chosen the best response.0ok. how do i solve from here?

RadEn
 one year ago
Best ResponseYou've already chosen the best response.0u just put the values of them (sin45, sin 30, cos45, cos 30)

RadEn
 one year ago
Best ResponseYou've already chosen the best response.0cos 45cos30 +sin45cos30 = ... (calculate it and simply)

RadEn
 one year ago
Best ResponseYou've already chosen the best response.0hmm.. what identity did u use ? it should be : cos 45cos30 +sin45cos30 do u know the exactly value of sin30 ? sin45 ? cos30 ? cos45 ?

miley28
 one year ago
Best ResponseYou've already chosen the best response.0just put the values cos45 =1/root 2 and cos 30= root3/2

miley28
 one year ago
Best ResponseYou've already chosen the best response.0sin 45=1/root ovr2 and sin 30=1/2...the multiply and add

mitchelsewbaran
 one year ago
Best ResponseYou've already chosen the best response.01/root ovr2 or 1/ root 2?
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