1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
fiasKO [112]
4 years ago
10

Evaluate the expression using an appropriate double angle formula.. cos^2(15) - sin^2(15)

Mathematics
1 answer:
riadik2000 [5.3K]4 years ago
7 0
Cos²(15°) - sin²(15°) = cos(15° * 2) = √(3/2 so this is the answer by using apropriate formula  double angle identity
You might be interested in
3/4 divided by what equals 12
slavikrds [6]

Answer:

0.05357142

Step-by-step explanation:

5 0
3 years ago
Please help.................
evablogger [386]
It usually works well to do what the instructions tell you. Multiply each diameter by 3.14.

a) 3.14×6 cm = 18.84 cm

b) [can't read the picture]

d) 3.14×9 in = 28.26 in

e) 3.14×11 mm = 34.54 mm
7 0
3 years ago
6.4 round too nearest whole number one
vladimir1956 [14]
6.4 rounded to the nearest whole number is 6
3 0
3 years ago
Read 2 more answers
What is the measure of OAC
Lady bird [3.3K]

Answer:

27°

Step-by-step explanation:

  • A tangent meets a radius at 90°
  • Angles in a trainable sum to 180°
  • 180 - 90 - 63 = 27°
4 0
3 years ago
Read 2 more answers
4(r+3)-3r=19 help me plz
bulgar [2K]
Since ur using r as a variable the answer is r = 7.
6 0
3 years ago
Read 2 more answers
Other questions:
  • Kate ran 4200 meters in 30<br> minutes. How many meters did<br> Kate run each minute?
    13·2 answers
  • WILL GIVE BRAINLIEST!!!!!!!!!!!!!!!!!!
    15·1 answer
  • What is the Pythagorean Theorem
    10·2 answers
  • Simplify this expression 5g/15 (g+h)
    13·1 answer
  • The area of a circular trampoline is 112.07 square feet. What is the radius
    14·2 answers
  • 35 Points !
    5·1 answer
  • What is the diameter of a sphere? A.Twice the radius of the sphere B.The distance between two spheres C.The distance from the ce
    5·1 answer
  • In a triangle ABC, the measure of
    11·1 answer
  • (2x-3)^2 = 4x-6<br> Find one value of x that is a solution to the equation
    7·1 answer
  • Equations and inequalities please help khan
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!