Question

sec^2(50) - 4 + tan^2(50).. is the answer to this - 3

Answer 1

1 + tan^2(50) = sec^2(50) ---> trig identity
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sec^2(50) - 4 + tan^2(50) =

1 + tan^2(50) - 4 + tan^2(50) =

1 - 4 = -3

Yes, you are correct.

Answer 2

Thank you i got the same answer but i was just trying to see if i was right

Answer 3

okay so what about this problem
given sec (theta) = 3 what is the exact value of csc (90 - (theta))

Answer 4

Secant and Cosecant are co-functions which means that they have the same value at complementary angles. A case in point for sine and cosine would be that:

sin(30) = cos(60)

So, csc (90 - (theta)) = 3.

Agree?

Answer 5

yeah someone just explained it abit for me i was still confused for a bit but accepted the statement to be true
the problem comes when its cos (theta) = 1/6
and you have to find sin(90 - theta) and csc( pie/2 - theta)

Answer 6

Would you write the question in a new post along with the instructions? (You need these trig identities to do this stuff. :) )

Answer 7

Thanks for doing that.