Question

Find the sin, cos, tan, cot, sec, csc: sin(pi/2-feta) =3

Answer 1

check the question once, sin or cos can never be more than 1

Answer 2

oops sin(pi/2 - feta) = -3/5

Answer 3

\(\large \sin (\frac{\pi}{2} - \theta) = \frac{-3}{5}\)

Answer 4

feta? since when have grades schools been using cheese as variables??

Answer 5

use this :-

\(\large \sin (\frac{\pi}{2} - \theta) = \cos \theta \)

Answer 6

lol feta is cheese is it

Answer 7

im not sure how...?

Answer 8

thats just an identity which you need to remember for now

once you have \(\cos \theta = -3/5\) , draw the triangle

Answer 9

find the other side using pythagorean formula

Answer 10

sqrt: 21?

Answer 11

looks wrong,

5^2 = 3^2 + x^2

25 = 9 + x^2

25-9 = x^2

16 = x^2

? = x

Answer 12

sqrt: 16 which is 4

Answer 13

so now i can find the rest

Answer 14

yes, u have the reference triangle.
so u can find the rest :)

Answer 15

only trick thing is, how do u figure out the signs ?
like, for cos, u got -3/5
wat signs u going to put for others ?

Answer 16

A solution using Mathematica for the calculations is attached.