Math, asked by BHAVYA15325, 11 months ago

Show that: sin(45° + A) sin(45º - A) =COS2A÷2

Answers

Answered by sandy1816

1

Step-by-step explanation:

sin(45+A)sin(45-A)

=sin²45cos²A-cos²45sin²A

=1/2cos²A-1/2sin²A

=1/2(cos²A-sin²A)

=1/2(cos2A)

=cos2A/2

Previous Question

Next Question

Similar questions

English, 6 months ago

you are the secretary of P.N.Housing Welfare societys draft a notice to be circulated to its members stating that second instalment of payment towards the cost of construction is due. Sign as Madhav/Madhuri. word limit 50.

Math, 6 months ago

together how long will they take to fill the tank? 2 1 4. ff tap A can fill of a tank in 12 h and tap B can fill - of a tank in 6 h. How long will it take to fill the 5 6 tank completely if both the taps are opened together?

Math, 6 months ago

find the area of the shaded region in each of the following figure...

Science, 11 months ago

what is pollination ...

English, 11 months ago

E1. Write a letter to the Principal of your schoolrequesting him/her to start NCC in your school.Mention the need and the benefits of NCC in a student's life and career of a student , You are Anshul Srivastava of class VIII.

Biology, 1 year ago

Why do we women above the age of 50 are unable to give birth to a child?? Class 8th...

Math, 1 year ago

R+1/S=1 and S+1/T, then R×S×T= ?

Science, 1 year ago

which is the most common non contagious diseases in the world...