Question

#CHALLENGE TO MATHS TOPPERS

Best answer will be marked Brainliest​

Answer 1

Answer:

please mark as brainliest

Step-by-step explanation:

15° can be written as 45° - 30°, Let A = 45°, and B = 30°

we know that Sin(A-B) = SinACosB - CosASinB,

and Cos A =

Substitute A and B here,

Sin(45-30) = (1/√2)*(√3/2) - (1/√2)*(1/2),

Sin (15) = (√3 - 1)/(2√2),

Similarly Cos 15 = (1+√3)/(2√2)

Hope you understand,

Answer 2

check the attachment