Math, asked by kashishbhatt1201, 9 months ago

2) (sin 72° + cos18°) (sin 72° – cos 18°)

Answers

Answered by aryan180296

2

Answer:

sin^2 72°-cos^2 18°

sin^2(90°-18°)-cos°2 18°. [ sin(90-A)=cosA]

cos^2 18° - cos^2 18° = 0

Answered by sweetykakkar111

2

sin(72 radians) cos(18) sin(72) Ans: 0.02809103624

Previous Question

Next Question

Similar questions

Physics, 4 months ago

Two gliders are travelling towards each other on a horizontal air track. Glider P has mass 0.30 kg and 0.60 kg and is moving with a constant speed with a constant speed of 1,2 ms-1, Glider Q has mass 1.2 ms. what are speed of glidwr after collision...

Physics, 4 months ago

identify the following electromagnetic radiation as per the wavelengths given below. write one application of each (a)1mm,(b)10^8m...

English, 4 months ago

Tea is a drink and it is very popular make it simple sentence...

English, 9 months ago

Which sentence uses an indefinite article? A)She gave us a picture of her trip to Egypt. B)That beautiful lark is my favourite. C)Did you enjoy the play this evening?

Science, 9 months ago

When should you call 911 about a fever in an adult?

English, 1 year ago

a new beginning phrase or clause...

Math, 1 year ago

6y+1/2+1=7y-3)3 check this equation...

Chemistry, 1 year ago

why copper reacts only with moist co2 to become corroded...