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If sin theta = cos theta, then value of...

If sin ` theta = cos theta`, then value of `theta` is :

A

`60^(@)`

B

`0^(@)`

C

`45^(@)`

D

`90^(@)`

Text Solution

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The correct Answer is:
C
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S CHAND IIT JEE FOUNDATION-TRIGONOMETRICAL RATIOS OF STANDARD ANGLES -Question Bank - 33
  1. The value of (sin 30^(@) - cos 60^(@) + tan 45^(@))/(cos 90^(@) + tan ...

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  2. The value of (1)/(2) sin ^(2) 90^(@) sin^(2) 30^(@) cos ^(2) 45^(@) + ...

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  3. The value of (cos 0^(@) + sin 45^(@) + sin 30^(@)) (sin 90^(@) - cos 4...

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  4. (tan 60^(@) - tan 30^(@))/(1 + tan 60^(@) tan 30^(@)) equal

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  5. Find the value of x, if sin 2 x = sin 60^(@) cos 30^(@) - cos 60^(@...

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  6. tan 26^(@) - cot 64^(@) equals

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  7. (sin19^@)/(cos71^@)+(cos73^@)/(sin17^@)

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  8. Consider the following equations : 1 . (cos 75^(@))/( sin 15 ^(@)) +...

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  9. sin ^(2) 25^(@) + sin ^(2) 65^(@) is equal to

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  10. If sin (30 ^(@) - theta) = cos (60 ^(@) + phi) , then

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  11. The value of cot 15^(@) cot 16^(@) cot 17^(@) . . . . . cot 73^(@) cot...

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  12. If sin theta = cos theta, then value of theta is :

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  13. Value of cos^(2) 5^(@) + cos^(2) 10^(@) + cos^(2) 80^(@) + cos ^(2) 85...

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  14. If sin 3 theta = cos (theta - 2^(@)) where 3 theta and (theta - 2^(@...

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  15. If tan theta = 1 and sin phi = (1)/( sqrt(2)) , then the value of co...

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  16. If x cos 60^(@) + y cos 0^(@) = 3 and 4x sin 30^(@) - y cot 45^(@) =...

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  17. Which one of the following is true ?

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  18. If x + y = 90^(@) , then what is sqrt( cos x cosec y - cos x sin...

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  19. If 0^(@) lt theta lt 90^(@) and cos^(2) theta - sin^(2) theta = (1)/(...

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  20. The value of sin^(2) (90^(@) - theta) [ 1 + cot ^(2) (90^(@) - theta)...

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