If sin0 = 3/4 and is in the first quadrant, then cos0 = a. 4/5
b. (sqrt 7)/4
c. 1/4
d. (sqrt 21)/3

Step-by-step explanation:

we are given that

we want to figure out Cos

in order to do so we can consider Pythagoras trig indentity given by

given that,sin=¾

thus substitute,

simplify square:

simplify substraction:

square root both sides:

By square root property:

simplify root:

hence, our answer is b

so

p=3

h=4

b=

b=

Now

cosθ=

So

b. is a required answer.

typically if you want , you would actually put questions here for us to you. but hey, that's just me. maybe someone will magically answer the questions for you without knowing what they are.

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation: