Math, asked by Anonymous, 10 months ago

please answer this question.....fast

Attachments:

Answers

Answered by Anonymous

3

Answer:

this is formula of cos( A-B)

then here A = 140 and B = 20 place them in

cos(140-20) = cos 120 = cos(90+30) = -1/2

Previous Question

Next Question

Similar questions

Math, 5 months ago

a) Find the perimeter of a square having the same area as that of a rectangle of length 8 cm and breadth 2 cm. a...

English, 5 months ago

Fill in the blanks with appropriate prepositions: THE STRATFORD SHAKESPEARE FESTIVAL is one of the major theatre festivals __1_ the world. It takes place __2__ Stratford, Ontario, __3__ the town of Kitchener. It starts in the spring and runs ___4_ April __5__November every year. Some of the world’s best actors appear __6_stages ___7__ of thousands of fans who travel to the festival...

Math, 5 months ago

प्रश्न.2: निम्न में से कौन सी कसौटी त्रिभुजों के सर्वांगसमता की कसौटिओं में से नहीं है- a. AAA b. ASA C.SSS d,RHS...

Math, 10 months ago

Ans, it small, low dams built over streams and dry riner bed is many of the drier parts of India called cheack dams...

English, 10 months ago

There is .....water in the bucket A) some B) anу C) many D) None which one is correct ?

Geography, 1 year ago

Which is the heaviest metal????

English, 1 year ago

It was a bright day and you were reading a book in your lawn. suddenly, a man threw a bag in your garden and ran away . you called him to but...... complete the story ...

Chemistry, 1 year ago

Average atomic mass of magnesium is 24.31 amu. This magnesium is composed of 79 mole % of Mgand remaining 21 mole % of 25 Mg and 26Mg. Calculate mole % of 26Mg. A) 10 B) 1 C) 15 D) 16...