Math, asked by harinisuryam130, 5 months ago

2. The value of sin 21º + cos 85° + cos 155° is

Answers

Answered by shravanim0220

1

Answer:

geometry is so hard to answer

Answered by manishaverma8182

2

Answer:

Cos35 +cos85+cos 155

Cos(60-25)+cos(60+25)+cos155

2 cos60 cos 25 + cos (180-25)

2*1/2 cos25 - cos 25

Cos 25 - cos25=0

Previous Question

Next Question

Similar questions

Math, 2 months ago

5. Help me with this guys...

Math, 2 months ago

answer all the question ...

Math, 2 months ago

the sum of three consecutive numbers is equal to 57...

Science, 5 months ago

There are two bodies P and Q having their masses 5kg and 10 kg respectively. If same force F acts on both P and Q, then the ratio of acceleration produced in P and Q is :...

Math, 5 months ago

answer this question?

English, 9 months ago

You are shaurya you attend the birthday party,write a paragraph you have seen in the party...

Math, 9 months ago

Out of 2400 students of a school only 60℅ passed . How many students will failed...

Math, 9 months ago

A number is multiplied itself three times what is the topic...