Tell me the math problem sin30 ° cos30 ° - Tan 45 ° urgent, urgent ah, I would like to thank you {random number L

Tell me the math problem sin30 ° cos30 ° - Tan 45 ° urgent, urgent ah, I would like to thank you {random number L

At the beginning, I just wanted to scare my parents, which led to the tragic ending of my life
You're right about me
The swaying lavender in the wind is blooming with lilac flowers, emitting a beige luster
I was drunk in the Acacia house in the rattan forest
Ah, this boy may be because he is young. He doesn't know that people can't be revived after death

Let's ask you about the math problem sin30 ° cos30 ° - Tan 45 ° if you will, thank you very much {random number J

Hiding in the cave regardless of the number of mosquito bites
It's like losing the wings of a silver butterfly
You told me I thought about me yesterday
These years, whenever the leaves turn yellow, I still think of you
Ah, his life is so short that his death has brought unprecedented heavy blow to his family

Ask you about the math problem sin30 ° cos 30 ° - Tan 45 ° to use it, thank you very much for your friends 8x

The frog stopped the excited song
I'm looking for you and you have a ghost
The doctor was helpless to answer. The boy's mother also followed by other people's motorcycles to come
Let the sea water drip through every inch of skin
Ah, every look

Sin 30 degrees + cos 30 degrees * Tan 60 degrees urgent!

Sin 30 degrees + cos 30 degrees * Tan 60 degrees
=sin30°+cos30°tan60°
=sin30°+sin²60°/cos60°
=cos60°+sin²60°/cos60°
=（cos²60°+sin²60°）/cos60°
=1/cos60°
=1/（1/2）
=2

Sin 30 degrees + cos 30 degrees - Tan 60 degrees

1 / 2 + (radical 3) / 2-radical 3 = 1 / 2 - (radical 3) / 2

cos30°,45°60° tan60°45°30° sin30°60°45° What are cos30 °, 45 ° 60 ° Tan 60 ° 45 ° 30 ° sin30 ° 60 ° 45 ° respectively?

Sin30 ° = 1 / 2 = cos60 °
Sin45 ° = root 2 = cos 45 °
Sin 60 ° = root of 2 = cos 30 °
Tan 30 ° = the root of 3
tan45°=1
Tan60 ° = radical 3

Calculation: sin 30 ° + cos 30 ° · Tan 60 °

Original formula = 1
2+
Three
2 x
Three
=1
2+3
Two
=2．

Evaluation: (tan10 degrees)- 3）sin40°．

（tan10°-
3）sin40°
=sin10°−
3cos10°
cos10°•sin40°
=−2sin50°cos50°
cos10°
=-sin100°
cos10°
=-cos10°
cos10°
=-1．

Root 3 (Tan 10 ° Tan 20 °) + Tan 10 ° Tan 20 ° (urgent ~)

tan30=tan(10+20)=(tan10+tan20)/(1-tan10*tan20)=√3/3
√3*(tan10+tan20)=1-tan10*tan20
tan10*tan20+√3*(tan10+tan20)=1

Calculation: tan20 + tan10 + root 3 / 3tan20tan10

Using the formula: Tan (a + b) = (Tana + tanb) * (1-tanatanb)  Tana + tanb = Tan (a + b) * (1-tanatanb) ﹥ tan20 + tan10 + root 3 / 3tan20tan10, = Tan (20 + 10) * (1-tan20tan10) + root 3 / 3tan20tan10 = root 3 / 3 - root 3 / 3tan20tan10 + root 3 / 3tan20tan10