Question

if 0 is an acute angle and sin 0 = cos 0 find the value of 2 tan ^2 0 + sin^20 -1​

Answer 1

Answer:

5/2

Step-by-step explanation:

If 0 is an acute angle and sin 0 = cos 0 find the value of 2 tan ^2 0 + sin^20 -1​

I assume that 0 =>Ф

so sin Ф= cos Ф

sin²Ф+cos²Ф=1

2sin²Ф=1

sinФ=1/√2

So Ф=45

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Now 2 tan² Ф + sin²Ф -1

=2 tan² 45 + sin²45 -1

=2*1+1/2-1

=3-1/2=5/2