Question

if tan@=a/b find sin2+cos2

Answer 1

sin(2) is irrational
cos(2) is also irrational

Answer 2

the sum of sin(2) and cos(2) is also irrational
this is something you plug into the calculator and approximate

Answer 3

we don't need the if part

Answer 4

unless you typed something wrong

Answer 5

maybe it was tan(2)? since theres a @ there.

Answer 6

this is not 2 that is square

Answer 7

so you want:\[\sin^2(\theta)+\cos^2(\theta)\]?

Answer 8

yes you are right

Answer 9

this is identity sin^2(theta)+cos^2(theta)=1

Answer 10

we don't need the if part lol

Answer 11

that is sin square theta plus cos square theta

Answer 12

right. That is a trig identity, and its equal to 1, just like Myininaya said.

Answer 13

ok sir how to solve that problem?

Answer 14

?

Answer 15

if tan @ = a/b find sin square theta + cos square theta

Answer 16

its not really something to solve, its a fact. something you should have memorized. the question could have been:

If the sky is black, and cheese grows old after 5 days, what is:\[\sin^2(\theta)+\cos^2(\theta)\] and the answer would still be 1. Its because of unit circle.

Answer 17

do you know the Pythagorean thm?

Answer 18

yes