sin^2 15 + cos^2 75=0
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Answered by
11
Answer:
Given, cos275° - sin215°
Need to prove the given equation as zero
⇒ we know that cos(90 - θ) = sinθ
∴ cos75° = cos(90 - 15)°
= sin15° - - - eq (1)
⇒ Substitute eq(1) in the given equation
∴ cos275° - sin215° =
sin215° - sin215° = 0
Hence, proved
Answered by
1
Answer:
Step-by-step explanation:
The left side if the equation is 0.13397459 does not equal to the right side 0 , which means that the given equation is false.
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