Help me with it please with stepsclass 9 trigonometry
2 answers:
secA=√2
secA=sec45
A=45°
3cos²45+5tan²45/ 4tan²A-sin²45
= 3(1/√3)²+5(1)² / 4(1)²-(1/√2)²
=3/2+5/4-1/2
=13/7
Answer:

Step-by-step explanation:
Using the identities
cos x =
, sin²x = 1 - cos²x
tan²x = sec²x - 1
Given

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