Question

if sin theta equal to cos theta show that to 10 squared theta + cos squared theta
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Answer 1

Answer:

Step-by-step explanation:

Hint : sin theta = cos theta

= sin theta/ cos theta = 1

= tan theta = 1

= tan theta = tan 45°

= theta = 45°

Answer 2

Answer:

Step-by-step explanation:

Sinθ= cosθ ( given)

So, θ= 45° { sin 45° = cos 45° = 1/√2}

Now,

10 tan²θ + cos²θ

= 10 tan² 45°+ cos ² 45 .

= 10 (1)² + (1/√2)²

=10 + 1/2

= 10.5