Given:
To find:
The exact value of cos 15°.
Solution:
Using half-angle identity:
Using the trigonometric identity:
Let us first solve the fraction in the numerator.
Using fraction rule:
Apply radical rule:
Using :
Answer:
9
Step-by-step explanation:
just trust me, i did this stuff in like 2 grade
The distance of the sun from earth is 155 miles
Step-by-step explanation:
1st one
option D
2(x-1)= 2x-2
2nd :
2y- _=0; y =0
optionB= 0
Answer:
it can be esier
Step-by-step explanation:
it is way less work to do on your brain so it is better