Math, asked by sojibiju863, 1 year ago

Sin47-sin25+sin61-sin11

Answers

Answered by AryanTennyson

sin47 - sin25) + (sin61 - sin11)

(2cos36 x sin11) + (2cos36 x sin25)

2cos36 ( sin11 + sin25)

4cos36 x sin18 x cos7

sin18 = (root5 - 1)/4 and cos36 = (root5 + 1)/4

=cos7

Previous Question

Next Question

Similar questions

English, 7 months ago

I have never met so famous a person_______Amitabh. Fill in the blank with appropriate word.

Science, 7 months ago

30. Solution of AI,(SO),; FeSO; Cuso, and ZnSO, were separately taken in four test tubes and some iron filings were added in each of the test tubes. After minutes a student would observe that the colour of: (a) CuSO, solution only changed (b) Solution of ZnSO, and Al(SO2), only changed (C) Solution of CuSO,,ZnSO and Al,(SO.), changed and that of FeSO. did not change. (d) All the four solution...

English, 7 months ago

1) Carbon monoxide is a ………………. oxide.

Math, 1 year ago

Prove that seek data into 1 minus sine theta in to sync data + tan theta is equal to 1...

Math, 1 year ago

find the sum of all natural numbers less than 200 which are divisible by 5...

Science, 1 year ago

how many heart chambers does a spider has...

Science, 1 year ago

which one is the fastest electric or light and why...

Math, 1 year ago

find the area of the top of the table whose length is 25m and breadth is 15m if the table has to be covered with a table cloth, such that on all 4 sides, 2m cloth must cover the legs of the table, what should be the length and breadth of the table cloth...