Math, asked by sravan9190, 12 days ago

sin21°cos9°−cos84°cos6°=

Answers

Answered by nareshyadav1268655

0

Step-by-step explanation:

sin21 cos9-cos84 cos6

sin21 cos9-cos (90-6)cos6

sin21cos9-sin6cos6

1/2 (2sin21cos9-2sin6cos6)

1/2 {sin (21+9)+sin (21-9)}-1/2{sin(6+6)+sin (6-6)}

1/2 {sin30+sin12}-1/2 {sin12+sin0}

1/2 {1/2+sin12}-1/2 {sin12+0}

1/4+1/2sin-1/2sin12

1/4 answer

Previous Question

Next Question

Similar questions

Math, 6 days ago

2x - 7 = 13 what is x?

History, 6 days ago

who is the wise mam of Chandra gupta ll...

Computer Science, 6 days ago

what is counter and looping?

English, 12 days ago

Rewrite the following sentences by changing the adjectives of comparison into a different degrees of comparison, keeping the meaning unchanged. 1.Tanushree is cleverer than her brother 2.The tiger is more fearful than the elephant 3.Sagar is the most intelligent student in the class. 4.Veena can't run as fast as I can.

Geography, 12 days ago

who was the first person to go moon...

Art, 7 months ago

two pics of animal which are omnivores and write two lines about each .

History, 7 months ago

Compare the strategies taken by Chu-Lien (Champa) and Dapunta Hyang Sri Jayanasa (Srivijaya) to strengthen his government...

Chemistry, 7 months ago

Why plastic can be molded into any shape and size and why is it advised to avoid the use of plastics as far as possible, also suggest some methods to limit its consumption. WRITE THE ANSWER IF YOU KNOW IT PERFECTLY. DO NOT ANSWER IF YOU DONT KNOW IT PLEASE ANSWER AS FAST AS YOU CAN. THE FASTEST WILL BE MARJED AS BRAINIEST.