Question

evaluate
cos²25°+sin²65°+tan²45°​

Answer 1

Answer:

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Answer 2

Answer:

✓$\huge\mathfrak\red{hello!!}$

$we \: have \: \\ \\ { \cos }^{2}25 + { \sin }^{2} 65 + { \tan }^{2} 45 \\ \\ { \cos }^{2} (90 - 65) + { \sin }^{2} 65 + {(1)}^{2} \\ \\ 2 { \sin }^{2} 65 + 1 \\ \\ 2 \times {0.82}^{2} + 1 \: \: \: \: because \sin(65) = 0.82 \\ \\ \\ \\ 1.3448 + 1 \\ \\ 2.3448$