Question

if Sin a = cos a then value of 2 tan^2 a + sin^2 a
a) 3/2
b) 1/2
c) 5/2
d) 2​

Answer 1

Answer:

Sina cannot be equal to cos a all options are wrong

Step-by-step explanation:

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Answer 2

Answer:

The value of the expression is 5/2

Step-by-step explanation:

If sin a = cos a,

a = $45^{o}$

$2tan^{2}a$ + $sin^{2}a$ = 2($1^{2}$) + $(1/\sqrt2)^{2}$

                       = 2 + 1/2

                       = 5/2

Option (C)