3 years ago

Rewrite with only sin x and cos x. sin 2x - cos 2x

Mathematics

2 answers:

Ymorist [56]3 years ago

4 0

Sin2x = 2sinxcosx
cos2x = (cosx)^2 - (sinx)^2 = 2(cosx)^2 -1 = 1- 2(sinx)^2

Any combination you want is here.

RoseWind [281]3 years ago

3 0

Sin2x-cos2x
2sinxcosx-2cos^2x-1
2cos^2x+2sinxcosx-1
I think that's how you do this one.

You might be interested in

-2(x + y)2 for for x =-3, y = 2 with steps

svlad2 [7]

Step-by-step explanation:

-2(-3+2)2

(-2×-3)+(-2×2)2

(6-4)2

2(6-4)

(2×6)+(2×-4)

12-8=4

6 0

3 years ago

What do two equivalent expressions always have in common?

sladkih [1.3K]

They both have the same variable(s) and equal the same thing

3 0

3 years ago

Select all polynomials that have (x – 3) as a factor.

mote1985 [20]

Answers: A, C, D

Explanation: Let (x-3)=0. x then equals 3. Substitute f(3) into each equation, and the ones which equal 0 are the answer.

4 0

3 years ago

Read 2 more answers

Find the area of the shape below.

Otrada [13]

Area = 10.08 yd²

Solution:

The given shape is a trapezoid.

Length of top base ( $b_1$ ) = 5.4 yd

Length of bottom base ( $b_2$ ) = 1.8 yd

Height of trapezoid (h) = 2.8 yd

<u>To find the area of the trapezoid:</u>

Area of the trapezoid = $\frac{1}{2}\times (b_1+b_2)\times h$

$$=\frac{1}{2}\times (5.4+1.8)\times 2.8$

$$=\frac{1}{2}\times 7.2\times 2.8$

= 10.08 yd²

Area = 10.08 yd²

3 0

3 years ago

Find the value of x in the triangle shown below

makvit [3.9K]

Answer:

Same Imao

Step-by-step explanation:

4 0

3 years ago