3 years ago

Find the unknown angle

Mathematics

1 answer:

Komok [63]3 years ago

5 0

Answer:

A = 45°

Step-by-step explanation:

All angles in a triangle add up to 180°.

We know that one angle in the triangle is 90° (this is known because of the small square).

Hence:

A + A + 90° = 180°

Simplify

2A + 90° = 180°

Rearrange

2A = 180 - 90

2A = 90

Divide both sides by 2, so that A is by itself

A = 45°

You might be interested in

For a school fundraiser Jeff sold large boxes of candy for three dollars each and small boxes of candy for two dollars each if y

Nookie1986 [14]

Answer:

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Please help me with this question.

elixir [45]

You will see a tiny picture up top of the question and draw it out and added then work

8 0

3 years ago

What is the greatest common factor of 32,24,40

Mandarinka [93]

The GCF of 24, 32, and 80 must be 8, since it is the largest number common to both lists. Example 1 Find the greatest common factor of each set of numbers by listing factors.

8 0

3 years ago

Which of the following graphs could be the graph of the inverse of f(a) =3"?

emmasim [6.3K]

Answer:b

Step-by-step explanation: cause my name Komi

6 0

3 years ago

How do you express sin x + cos x in terms of sine only?

frez [133]

Answer:

$\sin x + \sqrt{1-\sin^2x}$

Step-by-step explanation:

Given: sin x + cos x

To change the given trigonometry expression in term of sine only.

Trigonometry identity:-

$\sin^2x+\cos^2x=1$
$\cos x=\sqrt{1-\sin^2x}$

Expression: $\sin x+\cos x$

We get rid of cos x from expression and write as sine form.

Expression: $\sin x + \sqrt{1-\sin^2x}$ $\because \cos x=\sqrt{1-\sin^2x}$

Hence, The final expression is only sine function.

4 0

3 years ago

Find the unknown angle​

Find the unknown angle