In any triangle, show that:   from Mathematics Trigonometric F
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    Trigonometric Functions

    Multiple Choice QuestionsShort Answer Type

    171.

    Find space space space straight capital delta comma space straight r space and space straight R comma when straight a equals 22 comma space straight b equals 28 comma space straight c equals 36

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    Answer
    172. In any triangle ABC, show that

    left parenthesis abc right parenthesis space straight s space equals space straight capital delta squared space cosec straight A over 2 cosec straight B over 2 cosec straight C over 2
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    173.

    In any triangle, show that:  4 Rcos straight A over 2 cos straight B over 2 cos straight C over 2 equals straight s

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        straight capital delta space equals space square root of straight s left parenthesis straight s minus straight a right parenthesis space left parenthesis straight s minus straight b right parenthesis space left parenthesis straight s minus straight c right parenthesis end root

    L.H.S. = space space space space 4 straight R space cos straight A over 2 cos straight B over 2 cos straight C over 2

              = 4 fraction numerator abc over denominator 4 increment end fraction. square root of fraction numerator straight s left parenthesis straight s minus straight a right parenthesis over denominator bc end fraction end root. square root of fraction numerator straight s left parenthesis straight s minus straight b right parenthesis over denominator ca end fraction end root. square root of fraction numerator straight s left parenthesis straight s minus straight c right parenthesis over denominator ab end fraction end root

              = <pre>uncaught exception: <b>mkdir(): Permission denied (errno: 2) in /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php at line #56mkdir(): Permission denied</b><br /><br />in file: /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php line 56<br />#0 [internal function]: _hx_error_handler(2, 'mkdir(): Permis...', '/home/config_ad...', 56, Array) #1 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php(56): mkdir('/home/config_ad...', 493) #2 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/FolderTreeStorageAndCache.class.php(110): com_wiris_util_sys_Store->mkdirs() #3 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/RenderImpl.class.php(231): com_wiris_plugin_impl_FolderTreeStorageAndCache->codeDigest('mml=<math xmlns...') #4 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/TextServiceImpl.class.php(59): com_wiris_plugin_impl_RenderImpl->computeDigest(NULL, Array) #5 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/service.php(19): com_wiris_plugin_impl_TextServiceImpl->service('mathml2accessib...', Array) #6 {main}</pre>

              = s = R.H.S.
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    174. In any triangle ABC, show that

    sin space straight A plus sin space straight B plus sin space straight C space equals space fraction numerator straight capital delta over denominator straight r space straight R end fraction
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    175. In any triangle ABC, show that

    cosA space plus space cosB space plus space cosC space equals space 1 plus straight r over straight R
    109 Views
    Answer

    Multiple Choice QuestionsLong Answer Type

    176. In any triangle ABC, show that

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    Hence, prove that if sides a,b,c are in A.P., cot straight A over 2 comma space cot straight B over 2 space and space cot straight C over 2 are in A.P.
    109 Views
    Answer

    Multiple Choice QuestionsShort Answer Type

    177.

    In triangle ABC, if b = 15 cm, space space cosB space equals space 4 over 5 comma   find R.

    107 Views
    Answer
    178.

    Convert to radian measure:

    40 degree space 20 apostrophe

    98 Views
    Answer
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    179.

    Convert to radian measure:

    40 degree space 15 apostrophe space 36 apostrophe apostrophe


    102 Views
    Answer
    180.

    Convert to radian measure:

    22 degree space 30 apostrophe




    93 Views
    Answer
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