2 QUESTION 1
1.1
Given that sin 61° = Jt , determine in its simplest form, the values of each of the
following in terms of t, WITHOUT using a calculator:
1.1.1
sin 241°
1.1.2 cos61°
(2)

9514 1404 393

  1.1.1  sin(241°) = -√t

  1.1.2  cos(61°) = √(1 -t)

Step-by-step explanation:

Given:

 sin(61°) = √t

Find:

  1.1.1  sin(241°)

  1.1.2  cos(61°)

Solution:

1.1.1  sin(180° +x) = -sin(x)

  sin(241°) = -sin(61°) = -√t

__

1.1.2  cos(x) = √(1-sin²(x))

  cos(61°) = √(1 -(√t)²) = √(1 -t)

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.

a

step-by-step explanation: