4 years ago

Evaluate and simplify tan 15º.

1 answer:

6 0

Tan(15) = tan(45 - 30)

= [tan(45) - tan(30) ] / [ 1 + tan(30)tan(45)]

= (1 - 1/sqrt(3)) /(1 + 1/sqrt(3))

= (sqrt(3) - 1)/(sqrt(3) + 1)

= (sqrt(3) - 1)^2 /(3 - 1)

= 1/2 [3 + 1 - 2sqrt(3) ]

= (2 - sqrt(3) )

= 0.27 is your answer

You might be interested in

Find the area of the triangle

maks197457 [2]

Answer:

12 yd^2 (c)

Step-by-step explanation:

A=1/2bh

= 1/2 x 8 x 3

=12 yd^2

Hope it helps!!!

4 0

2 years ago

Read 2 more answers

Based on the graphic, which three-dimensional figure has the greatest volume?

dedylja [7]

Answer:c) they have the same volume

Step-by-step explanation: same height equals same volume

5 0

3 years ago

Help me with this questions please, brainiest reward

Mkey [24]

Answer:

theres no questions

Step-by-step explanation:

5 0

3 years ago

<img src="https://tex.z-dn.net/?f=%5Csqrt%7B4x%2B1%7D-5%3D0%5C%5C%5C%5C%5C%5C%5C%5C%5Csqrt%7B5x-1%7D%2B3%3Dx%5C%5C" id="TexFormu

adoni [48]

Answer:

what topic is this please

8 0

3 years ago

216q^3+15q^3 please help me solve it

katrin [286]

Answer:

231q^3

Step-by-step explanation:

Just add them together. They have the same expressions. Whenever you see a number with an ending similarly to another such as 3x and 2x, they can add together.

This is no different. If something is 6x^2 and another is 7x^2, you would add them to get 13x^2.

3 0

4 years ago

Read 2 more answers