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can we say that tan pi/8=sinpi/8//cospi/8

ash jai , 11 Years ago
Grade 10
anser 3 Answers
Kaustubh Nayyar
yes , why not
why do you think that it may not be so??
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Last Activity: 11 Years ago
ash jai
how can we furthur solve using this method and find the value ?actually my teacher in scool told that this is wrong when i wrote it in exam?
Last Activity: 11 Years ago
Kaustubh Nayyar
tan pi/2 = (tan pi/4 + tan pi/4)/ (1 โ€“ tan                     pi/4.tan pi/4)
this is considered as not defined
also sin pi/2 / cos pi/2 is considered not defined 
any trignometric ratio with denomitor zero is considered as not defined rest we can apply anywhere (in your case too)
Last Activity: 11 Years ago
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