Question

Which of the following is a trigonometric identity?
A. cottheta + tantheta = 1
B. sec2theta + csc2theta = 1
C. tan2theta = sin2theta × sec2theta
D. cos2theta = sec2theta × tan2theta

Answer 1

i need help

Answer 2

do you know the fundamental trigonometric formula ?

\(sin^2 x +cos^2 x = 1 \)

Answer 3

no

Answer 4

ok A. can be true ?

Answer 5

something else u know of?

Answer 6

besides A

Answer 7

no

do you know sec x = ? and csc x = ? like formula

Answer 8

no

Answer 9

@antman1 you need learn much about these all - we not can give you direct the right answer

Answer 10

ok