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boomerang285
 2 years ago
Please help...
Determine the measure of side c, given:
a=3m
b=4m
B=41deg
boomerang285
 2 years ago
Please help... Determine the measure of side c, given: a=3m b=4m B=41deg

This Question is Closed

boomerang285
 2 years ago
Best ResponseYou've already chosen the best response.0im not sure how to do this at all....

AravindG
 2 years ago
Best ResponseYou've already chosen the best response.1do u knw cosine rule ?

boomerang285
 2 years ago
Best ResponseYou've already chosen the best response.0i have just started learning about it

AravindG
 2 years ago
Best ResponseYou've already chosen the best response.1ok \[\cos B=\dfrac{a^2+c^2b^2}{2ac} \]

t_soulb
 2 years ago
Best ResponseYou've already chosen the best response.0yea good cosine rule,,my answer is b=2.44 (approx.)

dan815
 2 years ago
Best ResponseYou've already chosen the best response.0u could use sin law too i think

AravindG
 2 years ago
Best ResponseYou've already chosen the best response.1@dan815 sin law wont work cause we need two angles :/

dan815
 2 years ago
Best ResponseYou've already chosen the best response.0sin <b/b=sin<a=a sin<(180(a+b))/c and solve for C

dan815
 2 years ago
Best ResponseYou've already chosen the best response.0use my equation < means angle

boomerang285
 2 years ago
Best ResponseYou've already chosen the best response.0actually my options are: 1.6m 4.5m 0.1m 5.7m I thought it was 1.6m?

boomerang285
 2 years ago
Best ResponseYou've already chosen the best response.0actually it was 5.7 after I figured it out.. Thanks though

dan815
 2 years ago
Best ResponseYou've already chosen the best response.0if u remember that you need atleast 3 pieces of information to solve a triangle and that if the angle given is the angle of the opposite side then you can always use sin law if they give u like side a and b but give you angle C then you have to use cos law if its not a right angle triangle
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