Question

Given that cos(a)= the square root of 7 over 7, find the other 5 trigonometric functions.

Answer 1

Is that a 1 on an I?

Answer 2

you can work out value of x using pythagoras theorem

Answer 3

oh - sorry - my bad writing - its the square root of 7

Answer 4

haha its all good

Answer 5

x = sqrt(7^2 - 7) = sqrt 42

now you can find you 5 trig ratios

Answer 6

So sin(a) would equal sqrt42 over 7; however, we cannot find tan(a).

Answer 7

yes we can tan a = opposite / adjacent = sqrt42 / sqrt 7 = sqrt6

Answer 8

oh! okay. thank you so much.