Mathss helpp!! (1 Viewer)

[hobozforlife]

sin@=2/5for1/2<@<pi
SinB=1/2for 0< B< pi/2,
find the exact value of:

i) cos B

ii) sec^2 B

iii) tan @

iv) cosec B +tan (90-@)



This questionsz realli tricky, i attempted it but urghh!
pleasee help mee

 

[barbernator]

what does the B stand for?

 

[hobozforlife]

ohhh wait upp the whole question is:

sin@=2/5 for pi/2<@<pi
and sin B=1/2 for 0<B<pi/2


hey where you see these signs <, >
take em as: bigger them or equal to, or smaller then or equal to..

 

[Sanjeet]

Did you draw triangles?