Question

(vii) sin²24º – sin²6° = ​

Answer 1

ANSWER

FORMULA = sin^2 a- sin^2 b= sin(a+b) sin(a-b)

Here

a = 24 and b= 6

so,

sin30.sin18 = √5-1 / 8

{sin30 = 1/2

sin18 = √5-1/4}

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Answer 2

Answer:

sin^(2) 24= -0.82007217

sin^(2) 6 = -0.0780730205

therefore0.0780730205-0.82007317=

-0.74200015