Question

If sin A = COS A, find the value of tan²A+sin²A+1​

Answer 1

1/2

Step-by-step explanation:

• also ,if sin(A) =cos(A), then sin^2 (A).......so,if we square both of those,we get tan^2 (45)=1 ,and sin(45)= 1/2 ........hope u understand

Answer 2

Answer:

Given :-

sinA = cos A

sinA/cosA = 1

we know that 

sinA/cosA = tan A

hence,

tan A = 1

, but we know that tan 45° = 1

hence, 

A = 45°

2tan²A + sin²A  -1

2tan²45° + sin²45 - 1

we know ,

tan²45° = 1 , sin²45° = 1/√2

hence ,

2(1)² + 2 × (1/√2)² - 1

2 + 1 - 1

= 2

∴  2tan²A + sin²A  -1 = 2

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Step-by-step explanation: