Math, asked by sudenishalini, 5 hours ago

18.
Find value of sin2 15° + cos ² 15

Answers

Answered by adityadadouriya2001

0

Answer:

the value is 1from sin2theta +cos2theta

Answered by tejeswarteju

2

$trigonometric \: identities$

$sin {}^{2} x + cos {}^{2} x = 1$

$sec {}^{2} x - tan {}^{2} x = 1$

$cosec {}^{2} x - cot {}^{2} x = 1$

$similarly$

$sin {}^{2} 15° + cos {}^{2} 15° = 1$

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