Math, asked by RoshanKumar729, 10 months ago

the value of cos 20.sin70- sin20.cos70

Answers

Answered by DMNS

10

$<body bgcolor = "yellow" >$

$\huge{ƒσℓℓσωмє}$

$\tt{cos 20 = sin ( 90 - 20 ) }$
$\tt{cos 20 = sin 70}$

Replace using above we get ,

$\tt{sin^2 70 }$ - $\tt{sin^2 70 }$
$\tt{\pink{Answer = 0 }}$

Previous Question

Next Question

Similar questions

Physics, 5 months ago

a body moving with velocity 40 metre per second is brought to rest in 20 seconds find out the retardation find also the distance travelled in that time ...

Physics, 5 months ago

Q-1; A body is moving along a circular path of radius R. what will be the distance travelled and displacement of the body when it complete half a revolution. (1)...

India Languages, 5 months ago

biggest surprise in your life?

Math, 10 months ago

Find how many three digit perfect cube is there whose sum of the digits is a perfect square...

English, 10 months ago

the old farmer and his four lazy sons...

Math, 1 year ago

a shop sells sweet where every 3 sweet wrappers can be exchanged for one more sweet. Ali has enough money to buy only 7 sweets. What is the biggest number of sweets that he can get from the shop?

English, 1 year ago

“The king spent a lifetime trying to kill hundred tigers but his death came due to a toy tiger.” Comment...

English, 1 year ago

Prepare a poster on dance competition prepare a poster on dance competition...