Home
Class 9
MATHS
If sin30^(@)=x " and " cos60^(@)=y, " th...

If `sin30^(@)=x " and " cos60^(@)=y, " then " x^(2)+y^(2)` is

A

`(1)/(2)`

B

0

C

`sin90^(@)`

D

`cos90^(@)`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRY

    FULL MARKS|Exercise THINKING CORNER|4 Videos

  • TRIGONOMETRY

    FULL MARKS|Exercise ADDITIONAL QUESTIONS SOLVED|5 Videos

  • TRIGONOMETRY

    FULL MARKS|Exercise EXERCISE - 6.4|6 Videos

  • STATISTICS

    FULL MARKS|Exercise Assignment (Answer the following question)|10 Videos

Similar Questions

Explore conceptually related problems

If sin A + sin 2A = x and cos A + cos 2A = y, then (x^(2)+y^(2)) (x^(2)+y^(2)-1)=

Evaluate the following (sec^(2) 60^(@) -tan ^(2) 60^(@) )/( sin ^(2) 30^(@) +cos ^(2) 30^(@) )

The area enclosed between the curve y=sin^(2)x and y=cos^(2)x in the interval 0le x le pi is _____ sq. units.

If x= a sin theta and y =b cos theta, then (d^2 y)/(dx^2) is…............ .

Is it right to say that cos ( 60^(@) + 30 ^(@) ) = cos 60^(@) cos 30 ^(@) -sin 60^(@) sin 30 ^(@)

cos 60^(@) sin 30^(@) +cos 30^(@) sin 60^(@)=

If x sin ^3 alpha + y cos^3 alpha = sin alpha cos alpha and x sin alpha - y cos alpha =0 , then x^2 +y^2 is